Instruction stringlengths 45 106 | input_code stringlengths 1 13.7k | output_code stringlengths 1 13.7k |
|---|---|---|
Maintain the same structure and functionality when rewriting this code in VB. |
(define (powerset s)
(for/fold ([outer-set (set(set))]) ([element s])
(set-union outer-set
(list->set (set-map outer-set
(Ξ»(inner-set) (set-add inner-set element)))))))
| Option Base 1
Private Function power_set(ByRef st As Collection) As Collection
Dim subset As Collection, pwset As New Collection
For i = 0 To 2 ^ st.Count - 1
Set subset = New Collection
For j = 1 To st.Count
If i And 2 ^ (j - 1) Then subset.Add st(j)
Next j
pwset.Add subset
Next i
Set power_set = pwset
End Function
Private Function print_set(ByRef st As Collection) As String
Dim s() As String, t() As String
ReDim s(st.Count)
For i = 1 To st.Count
If st(i).Count > 0 Then
ReDim t(st(i).Count)
For j = 1 To st(i).Count
Select Case TypeName(st(i)(j))
Case "Integer": t(j) = CStr(st(i)(j))
Case "Collection": t(j) = "{}"
End Select
Next j
s(i) = "{" & Join(t, ", ") & "}"
Else
s(i) = "{}"
End If
Next i
print_set = "{" & Join(s, ", ") & "}"
End Function
Public Sub rc()
Dim rcset As New Collection, result As Collection
For i = 1 To 4
rcset.Add i
Next i
Debug.Print print_set(power_set(rcset))
Set rcset = New Collection
Debug.Print print_set(power_set(rcset))
Dim emptyset As New Collection
rcset.Add emptyset
Debug.Print print_set(power_set(rcset))
Debug.Print
End Sub
|
Write a version of this Racket function in Go with identical behavior. |
(define (powerset s)
(for/fold ([outer-set (set(set))]) ([element s])
(set-union outer-set
(list->set (set-map outer-set
(Ξ»(inner-set) (set-add inner-set element)))))))
| package main
import (
"fmt"
"strconv"
"strings"
)
type elem interface {
Eq(elem) bool
fmt.Stringer
}
type Int int
func (i Int) Eq(e elem) bool {
j, ok := e.(Int)
return ok && i == j
}
func (i Int) String() string {
return strconv.Itoa(int(i))
}
type set []elem
func (s *set) add(e elem) {
if !s.has(e) {
*s = append(*s, e)
}
}
func (s *set) has(e elem) bool {
for _, ex := range *s {
if e.Eq(ex) {
return true
}
}
return false
}
func (s set) ok() bool {
for i, e0 := range s {
for _, e1 := range s[i+1:] {
if e0.Eq(e1) {
return false
}
}
}
return true
}
func (s set) Eq(e elem) bool {
t, ok := e.(set)
if !ok {
return false
}
if len(s) != len(t) {
return false
}
for _, se := range s {
if !t.has(se) {
return false
}
}
return true
}
func (s set) String() string {
if len(s) == 0 {
return "β
"
}
var buf strings.Builder
buf.WriteRune('{')
for i, e := range s {
if i > 0 {
buf.WriteRune(',')
}
buf.WriteString(e.String())
}
buf.WriteRune('}')
return buf.String()
}
func (s set) powerSet() set {
r := set{set{}}
for _, es := range s {
var u set
for _, er := range r {
er := er.(set)
u = append(u, append(er[:len(er):len(er)], es))
}
r = append(r, u...)
}
return r
}
func main() {
var s set
for _, i := range []Int{1, 2, 2, 3, 4, 4, 4} {
s.add(i)
}
fmt.Println(" s:", s, "length:", len(s))
ps := s.powerSet()
fmt.Println(" π·(s):", ps, "length:", len(ps))
fmt.Println("\n(extra credit)")
var empty set
fmt.Println(" empty:", empty, "len:", len(empty))
ps = empty.powerSet()
fmt.Println(" π·(β
):", ps, "len:", len(ps))
ps = ps.powerSet()
fmt.Println("π·(π·(β
)):", ps, "len:", len(ps))
fmt.Println("\n(regression test for earlier bug)")
s = set{Int(1), Int(2), Int(3), Int(4), Int(5)}
fmt.Println(" s:", s, "length:", len(s), "ok:", s.ok())
ps = s.powerSet()
fmt.Println(" π·(s):", "length:", len(ps), "ok:", ps.ok())
for _, e := range ps {
if !e.(set).ok() {
panic("invalid set in ps")
}
}
}
|
Please provide an equivalent version of this REXX code in C. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| #include <stdio.h>
struct node {
char *s;
struct node* prev;
};
void powerset(char **v, int n, struct node *up)
{
struct node me;
if (!n) {
putchar('[');
while (up) {
printf(" %s", up->s);
up = up->prev;
}
puts(" ]");
} else {
me.s = *v;
me.prev = up;
powerset(v + 1, n - 1, up);
powerset(v + 1, n - 1, &me);
}
}
int main(int argc, char **argv)
{
powerset(argv + 1, argc - 1, 0);
return 0;
}
|
Write the same code in C# as shown below in REXX. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| public IEnumerable<IEnumerable<T>> GetPowerSet<T>(List<T> list)
{
return from m in Enumerable.Range(0, 1 << list.Count)
select
from i in Enumerable.Range(0, list.Count)
where (m & (1 << i)) != 0
select list[i];
}
public void PowerSetofColors()
{
var colors = new List<KnownColor> { KnownColor.Red, KnownColor.Green,
KnownColor.Blue, KnownColor.Yellow };
var result = GetPowerSet(colors);
Console.Write( string.Join( Environment.NewLine,
result.Select(subset =>
string.Join(",", subset.Select(clr => clr.ToString()).ToArray())).ToArray()));
}
|
Write the same algorithm in C++ as shown in this REXX implementation. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| #include <iostream>
#include <set>
#include <vector>
#include <iterator>
#include <algorithm>
typedef std::set<int> set_type;
typedef std::set<set_type> powerset_type;
powerset_type powerset(set_type const& set)
{
typedef set_type::const_iterator set_iter;
typedef std::vector<set_iter> vec;
typedef vec::iterator vec_iter;
struct local
{
static int dereference(set_iter v) { return *v; }
};
powerset_type result;
vec elements;
do
{
set_type tmp;
std::transform(elements.begin(), elements.end(),
std::inserter(tmp, tmp.end()),
local::dereference);
result.insert(tmp);
if (!elements.empty() && ++elements.back() == set.end())
{
elements.pop_back();
}
else
{
set_iter iter;
if (elements.empty())
{
iter = set.begin();
}
else
{
iter = elements.back();
++iter;
}
for (; iter != set.end(); ++iter)
{
elements.push_back(iter);
}
}
} while (!elements.empty());
return result;
}
int main()
{
int values[4] = { 2, 3, 5, 7 };
set_type test_set(values, values+4);
powerset_type test_powerset = powerset(test_set);
for (powerset_type::iterator iter = test_powerset.begin();
iter != test_powerset.end();
++iter)
{
std::cout << "{ ";
char const* prefix = "";
for (set_type::iterator iter2 = iter->begin();
iter2 != iter->end();
++iter2)
{
std::cout << prefix << *iter2;
prefix = ", ";
}
std::cout << " }\n";
}
}
|
Produce a functionally identical Java code for the snippet given in REXX. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| public static ArrayList<String> getpowerset(int a[],int n,ArrayList<String> ps)
{
if(n<0)
{
return null;
}
if(n==0)
{
if(ps==null)
ps=new ArrayList<String>();
ps.add(" ");
return ps;
}
ps=getpowerset(a, n-1, ps);
ArrayList<String> tmp=new ArrayList<String>();
for(String s:ps)
{
if(s.equals(" "))
tmp.add(""+a[n-1]);
else
tmp.add(s+a[n-1]);
}
ps.addAll(tmp);
return ps;
}
|
Write the same code in Python as shown below in REXX. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| def list_powerset(lst):
result = [[]]
for x in lst:
result.extend([subset + [x] for subset in result])
return result
def list_powerset2(lst):
return reduce(lambda result, x: result + [subset + [x] for subset in result],
lst, [[]])
def powerset(s):
return frozenset(map(frozenset, list_powerset(list(s))))
|
Transform the following REXX implementation into VB, maintaining the same output and logic. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| Option Base 1
Private Function power_set(ByRef st As Collection) As Collection
Dim subset As Collection, pwset As New Collection
For i = 0 To 2 ^ st.Count - 1
Set subset = New Collection
For j = 1 To st.Count
If i And 2 ^ (j - 1) Then subset.Add st(j)
Next j
pwset.Add subset
Next i
Set power_set = pwset
End Function
Private Function print_set(ByRef st As Collection) As String
Dim s() As String, t() As String
ReDim s(st.Count)
For i = 1 To st.Count
If st(i).Count > 0 Then
ReDim t(st(i).Count)
For j = 1 To st(i).Count
Select Case TypeName(st(i)(j))
Case "Integer": t(j) = CStr(st(i)(j))
Case "Collection": t(j) = "{}"
End Select
Next j
s(i) = "{" & Join(t, ", ") & "}"
Else
s(i) = "{}"
End If
Next i
print_set = "{" & Join(s, ", ") & "}"
End Function
Public Sub rc()
Dim rcset As New Collection, result As Collection
For i = 1 To 4
rcset.Add i
Next i
Debug.Print print_set(power_set(rcset))
Set rcset = New Collection
Debug.Print print_set(power_set(rcset))
Dim emptyset As New Collection
rcset.Add emptyset
Debug.Print print_set(power_set(rcset))
Debug.Print
End Sub
|
Change the programming language of this snippet from REXX to Go without modifying what it does. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| package main
import (
"fmt"
"strconv"
"strings"
)
type elem interface {
Eq(elem) bool
fmt.Stringer
}
type Int int
func (i Int) Eq(e elem) bool {
j, ok := e.(Int)
return ok && i == j
}
func (i Int) String() string {
return strconv.Itoa(int(i))
}
type set []elem
func (s *set) add(e elem) {
if !s.has(e) {
*s = append(*s, e)
}
}
func (s *set) has(e elem) bool {
for _, ex := range *s {
if e.Eq(ex) {
return true
}
}
return false
}
func (s set) ok() bool {
for i, e0 := range s {
for _, e1 := range s[i+1:] {
if e0.Eq(e1) {
return false
}
}
}
return true
}
func (s set) Eq(e elem) bool {
t, ok := e.(set)
if !ok {
return false
}
if len(s) != len(t) {
return false
}
for _, se := range s {
if !t.has(se) {
return false
}
}
return true
}
func (s set) String() string {
if len(s) == 0 {
return "β
"
}
var buf strings.Builder
buf.WriteRune('{')
for i, e := range s {
if i > 0 {
buf.WriteRune(',')
}
buf.WriteString(e.String())
}
buf.WriteRune('}')
return buf.String()
}
func (s set) powerSet() set {
r := set{set{}}
for _, es := range s {
var u set
for _, er := range r {
er := er.(set)
u = append(u, append(er[:len(er):len(er)], es))
}
r = append(r, u...)
}
return r
}
func main() {
var s set
for _, i := range []Int{1, 2, 2, 3, 4, 4, 4} {
s.add(i)
}
fmt.Println(" s:", s, "length:", len(s))
ps := s.powerSet()
fmt.Println(" π·(s):", ps, "length:", len(ps))
fmt.Println("\n(extra credit)")
var empty set
fmt.Println(" empty:", empty, "len:", len(empty))
ps = empty.powerSet()
fmt.Println(" π·(β
):", ps, "len:", len(ps))
ps = ps.powerSet()
fmt.Println("π·(π·(β
)):", ps, "len:", len(ps))
fmt.Println("\n(regression test for earlier bug)")
s = set{Int(1), Int(2), Int(3), Int(4), Int(5)}
fmt.Println(" s:", s, "length:", len(s), "ok:", s.ok())
ps = s.powerSet()
fmt.Println(" π·(s):", "length:", len(ps), "ok:", ps.ok())
for _, e := range ps {
if !e.(set).ok() {
panic("invalid set in ps")
}
}
}
|
Keep all operations the same but rewrite the snippet in C. |
class Array
def power_set
inject([[]]) do |acc, you|
ret = []
acc.each do |i|
ret << i
ret << i + [you]
end
ret
end
end
def func_power_set
inject([[]]) { |ps,item|
ps +
ps.map { |e| e + [item] }
}
end
end
require 'set'
class Set
def powerset
inject(Set[Set[]]) do |ps, item|
ps.union ps.map {|e| e.union (Set.new [item])}
end
end
end
p [1,2,3,4].power_set
p %w(one two three).func_power_set
p Set[1,2,3].powerset
| #include <stdio.h>
struct node {
char *s;
struct node* prev;
};
void powerset(char **v, int n, struct node *up)
{
struct node me;
if (!n) {
putchar('[');
while (up) {
printf(" %s", up->s);
up = up->prev;
}
puts(" ]");
} else {
me.s = *v;
me.prev = up;
powerset(v + 1, n - 1, up);
powerset(v + 1, n - 1, &me);
}
}
int main(int argc, char **argv)
{
powerset(argv + 1, argc - 1, 0);
return 0;
}
|
Change the following Ruby code into C# without altering its purpose. |
class Array
def power_set
inject([[]]) do |acc, you|
ret = []
acc.each do |i|
ret << i
ret << i + [you]
end
ret
end
end
def func_power_set
inject([[]]) { |ps,item|
ps +
ps.map { |e| e + [item] }
}
end
end
require 'set'
class Set
def powerset
inject(Set[Set[]]) do |ps, item|
ps.union ps.map {|e| e.union (Set.new [item])}
end
end
end
p [1,2,3,4].power_set
p %w(one two three).func_power_set
p Set[1,2,3].powerset
| public IEnumerable<IEnumerable<T>> GetPowerSet<T>(List<T> list)
{
return from m in Enumerable.Range(0, 1 << list.Count)
select
from i in Enumerable.Range(0, list.Count)
where (m & (1 << i)) != 0
select list[i];
}
public void PowerSetofColors()
{
var colors = new List<KnownColor> { KnownColor.Red, KnownColor.Green,
KnownColor.Blue, KnownColor.Yellow };
var result = GetPowerSet(colors);
Console.Write( string.Join( Environment.NewLine,
result.Select(subset =>
string.Join(",", subset.Select(clr => clr.ToString()).ToArray())).ToArray()));
}
|
Transform the following Ruby implementation into C++, maintaining the same output and logic. |
class Array
def power_set
inject([[]]) do |acc, you|
ret = []
acc.each do |i|
ret << i
ret << i + [you]
end
ret
end
end
def func_power_set
inject([[]]) { |ps,item|
ps +
ps.map { |e| e + [item] }
}
end
end
require 'set'
class Set
def powerset
inject(Set[Set[]]) do |ps, item|
ps.union ps.map {|e| e.union (Set.new [item])}
end
end
end
p [1,2,3,4].power_set
p %w(one two three).func_power_set
p Set[1,2,3].powerset
| #include <iostream>
#include <set>
#include <vector>
#include <iterator>
#include <algorithm>
typedef std::set<int> set_type;
typedef std::set<set_type> powerset_type;
powerset_type powerset(set_type const& set)
{
typedef set_type::const_iterator set_iter;
typedef std::vector<set_iter> vec;
typedef vec::iterator vec_iter;
struct local
{
static int dereference(set_iter v) { return *v; }
};
powerset_type result;
vec elements;
do
{
set_type tmp;
std::transform(elements.begin(), elements.end(),
std::inserter(tmp, tmp.end()),
local::dereference);
result.insert(tmp);
if (!elements.empty() && ++elements.back() == set.end())
{
elements.pop_back();
}
else
{
set_iter iter;
if (elements.empty())
{
iter = set.begin();
}
else
{
iter = elements.back();
++iter;
}
for (; iter != set.end(); ++iter)
{
elements.push_back(iter);
}
}
} while (!elements.empty());
return result;
}
int main()
{
int values[4] = { 2, 3, 5, 7 };
set_type test_set(values, values+4);
powerset_type test_powerset = powerset(test_set);
for (powerset_type::iterator iter = test_powerset.begin();
iter != test_powerset.end();
++iter)
{
std::cout << "{ ";
char const* prefix = "";
for (set_type::iterator iter2 = iter->begin();
iter2 != iter->end();
++iter2)
{
std::cout << prefix << *iter2;
prefix = ", ";
}
std::cout << " }\n";
}
}
|
Write a version of this Ruby function in Java with identical behavior. |
class Array
def power_set
inject([[]]) do |acc, you|
ret = []
acc.each do |i|
ret << i
ret << i + [you]
end
ret
end
end
def func_power_set
inject([[]]) { |ps,item|
ps +
ps.map { |e| e + [item] }
}
end
end
require 'set'
class Set
def powerset
inject(Set[Set[]]) do |ps, item|
ps.union ps.map {|e| e.union (Set.new [item])}
end
end
end
p [1,2,3,4].power_set
p %w(one two three).func_power_set
p Set[1,2,3].powerset
| public static ArrayList<String> getpowerset(int a[],int n,ArrayList<String> ps)
{
if(n<0)
{
return null;
}
if(n==0)
{
if(ps==null)
ps=new ArrayList<String>();
ps.add(" ");
return ps;
}
ps=getpowerset(a, n-1, ps);
ArrayList<String> tmp=new ArrayList<String>();
for(String s:ps)
{
if(s.equals(" "))
tmp.add(""+a[n-1]);
else
tmp.add(s+a[n-1]);
}
ps.addAll(tmp);
return ps;
}
|
Convert the following code from Ruby to Python, ensuring the logic remains intact. |
class Array
def power_set
inject([[]]) do |acc, you|
ret = []
acc.each do |i|
ret << i
ret << i + [you]
end
ret
end
end
def func_power_set
inject([[]]) { |ps,item|
ps +
ps.map { |e| e + [item] }
}
end
end
require 'set'
class Set
def powerset
inject(Set[Set[]]) do |ps, item|
ps.union ps.map {|e| e.union (Set.new [item])}
end
end
end
p [1,2,3,4].power_set
p %w(one two three).func_power_set
p Set[1,2,3].powerset
| def list_powerset(lst):
result = [[]]
for x in lst:
result.extend([subset + [x] for subset in result])
return result
def list_powerset2(lst):
return reduce(lambda result, x: result + [subset + [x] for subset in result],
lst, [[]])
def powerset(s):
return frozenset(map(frozenset, list_powerset(list(s))))
|
Write the same algorithm in VB as shown in this Ruby implementation. |
class Array
def power_set
inject([[]]) do |acc, you|
ret = []
acc.each do |i|
ret << i
ret << i + [you]
end
ret
end
end
def func_power_set
inject([[]]) { |ps,item|
ps +
ps.map { |e| e + [item] }
}
end
end
require 'set'
class Set
def powerset
inject(Set[Set[]]) do |ps, item|
ps.union ps.map {|e| e.union (Set.new [item])}
end
end
end
p [1,2,3,4].power_set
p %w(one two three).func_power_set
p Set[1,2,3].powerset
| Option Base 1
Private Function power_set(ByRef st As Collection) As Collection
Dim subset As Collection, pwset As New Collection
For i = 0 To 2 ^ st.Count - 1
Set subset = New Collection
For j = 1 To st.Count
If i And 2 ^ (j - 1) Then subset.Add st(j)
Next j
pwset.Add subset
Next i
Set power_set = pwset
End Function
Private Function print_set(ByRef st As Collection) As String
Dim s() As String, t() As String
ReDim s(st.Count)
For i = 1 To st.Count
If st(i).Count > 0 Then
ReDim t(st(i).Count)
For j = 1 To st(i).Count
Select Case TypeName(st(i)(j))
Case "Integer": t(j) = CStr(st(i)(j))
Case "Collection": t(j) = "{}"
End Select
Next j
s(i) = "{" & Join(t, ", ") & "}"
Else
s(i) = "{}"
End If
Next i
print_set = "{" & Join(s, ", ") & "}"
End Function
Public Sub rc()
Dim rcset As New Collection, result As Collection
For i = 1 To 4
rcset.Add i
Next i
Debug.Print print_set(power_set(rcset))
Set rcset = New Collection
Debug.Print print_set(power_set(rcset))
Dim emptyset As New Collection
rcset.Add emptyset
Debug.Print print_set(power_set(rcset))
Debug.Print
End Sub
|
Change the programming language of this snippet from Scala to C without modifying what it does. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| #include <stdio.h>
struct node {
char *s;
struct node* prev;
};
void powerset(char **v, int n, struct node *up)
{
struct node me;
if (!n) {
putchar('[');
while (up) {
printf(" %s", up->s);
up = up->prev;
}
puts(" ]");
} else {
me.s = *v;
me.prev = up;
powerset(v + 1, n - 1, up);
powerset(v + 1, n - 1, &me);
}
}
int main(int argc, char **argv)
{
powerset(argv + 1, argc - 1, 0);
return 0;
}
|
Maintain the same structure and functionality when rewriting this code in C#. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| public IEnumerable<IEnumerable<T>> GetPowerSet<T>(List<T> list)
{
return from m in Enumerable.Range(0, 1 << list.Count)
select
from i in Enumerable.Range(0, list.Count)
where (m & (1 << i)) != 0
select list[i];
}
public void PowerSetofColors()
{
var colors = new List<KnownColor> { KnownColor.Red, KnownColor.Green,
KnownColor.Blue, KnownColor.Yellow };
var result = GetPowerSet(colors);
Console.Write( string.Join( Environment.NewLine,
result.Select(subset =>
string.Join(",", subset.Select(clr => clr.ToString()).ToArray())).ToArray()));
}
|
Preserve the algorithm and functionality while converting the code from Scala to C++. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| #include <iostream>
#include <set>
#include <vector>
#include <iterator>
#include <algorithm>
typedef std::set<int> set_type;
typedef std::set<set_type> powerset_type;
powerset_type powerset(set_type const& set)
{
typedef set_type::const_iterator set_iter;
typedef std::vector<set_iter> vec;
typedef vec::iterator vec_iter;
struct local
{
static int dereference(set_iter v) { return *v; }
};
powerset_type result;
vec elements;
do
{
set_type tmp;
std::transform(elements.begin(), elements.end(),
std::inserter(tmp, tmp.end()),
local::dereference);
result.insert(tmp);
if (!elements.empty() && ++elements.back() == set.end())
{
elements.pop_back();
}
else
{
set_iter iter;
if (elements.empty())
{
iter = set.begin();
}
else
{
iter = elements.back();
++iter;
}
for (; iter != set.end(); ++iter)
{
elements.push_back(iter);
}
}
} while (!elements.empty());
return result;
}
int main()
{
int values[4] = { 2, 3, 5, 7 };
set_type test_set(values, values+4);
powerset_type test_powerset = powerset(test_set);
for (powerset_type::iterator iter = test_powerset.begin();
iter != test_powerset.end();
++iter)
{
std::cout << "{ ";
char const* prefix = "";
for (set_type::iterator iter2 = iter->begin();
iter2 != iter->end();
++iter2)
{
std::cout << prefix << *iter2;
prefix = ", ";
}
std::cout << " }\n";
}
}
|
Keep all operations the same but rewrite the snippet in Java. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| public static ArrayList<String> getpowerset(int a[],int n,ArrayList<String> ps)
{
if(n<0)
{
return null;
}
if(n==0)
{
if(ps==null)
ps=new ArrayList<String>();
ps.add(" ");
return ps;
}
ps=getpowerset(a, n-1, ps);
ArrayList<String> tmp=new ArrayList<String>();
for(String s:ps)
{
if(s.equals(" "))
tmp.add(""+a[n-1]);
else
tmp.add(s+a[n-1]);
}
ps.addAll(tmp);
return ps;
}
|
Convert this Scala snippet to Python and keep its semantics consistent. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| def list_powerset(lst):
result = [[]]
for x in lst:
result.extend([subset + [x] for subset in result])
return result
def list_powerset2(lst):
return reduce(lambda result, x: result + [subset + [x] for subset in result],
lst, [[]])
def powerset(s):
return frozenset(map(frozenset, list_powerset(list(s))))
|
Rewrite the snippet below in VB so it works the same as the original Scala code. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| Option Base 1
Private Function power_set(ByRef st As Collection) As Collection
Dim subset As Collection, pwset As New Collection
For i = 0 To 2 ^ st.Count - 1
Set subset = New Collection
For j = 1 To st.Count
If i And 2 ^ (j - 1) Then subset.Add st(j)
Next j
pwset.Add subset
Next i
Set power_set = pwset
End Function
Private Function print_set(ByRef st As Collection) As String
Dim s() As String, t() As String
ReDim s(st.Count)
For i = 1 To st.Count
If st(i).Count > 0 Then
ReDim t(st(i).Count)
For j = 1 To st(i).Count
Select Case TypeName(st(i)(j))
Case "Integer": t(j) = CStr(st(i)(j))
Case "Collection": t(j) = "{}"
End Select
Next j
s(i) = "{" & Join(t, ", ") & "}"
Else
s(i) = "{}"
End If
Next i
print_set = "{" & Join(s, ", ") & "}"
End Function
Public Sub rc()
Dim rcset As New Collection, result As Collection
For i = 1 To 4
rcset.Add i
Next i
Debug.Print print_set(power_set(rcset))
Set rcset = New Collection
Debug.Print print_set(power_set(rcset))
Dim emptyset As New Collection
rcset.Add emptyset
Debug.Print print_set(power_set(rcset))
Debug.Print
End Sub
|
Rewrite this program in Go while keeping its functionality equivalent to the Scala version. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| package main
import (
"fmt"
"strconv"
"strings"
)
type elem interface {
Eq(elem) bool
fmt.Stringer
}
type Int int
func (i Int) Eq(e elem) bool {
j, ok := e.(Int)
return ok && i == j
}
func (i Int) String() string {
return strconv.Itoa(int(i))
}
type set []elem
func (s *set) add(e elem) {
if !s.has(e) {
*s = append(*s, e)
}
}
func (s *set) has(e elem) bool {
for _, ex := range *s {
if e.Eq(ex) {
return true
}
}
return false
}
func (s set) ok() bool {
for i, e0 := range s {
for _, e1 := range s[i+1:] {
if e0.Eq(e1) {
return false
}
}
}
return true
}
func (s set) Eq(e elem) bool {
t, ok := e.(set)
if !ok {
return false
}
if len(s) != len(t) {
return false
}
for _, se := range s {
if !t.has(se) {
return false
}
}
return true
}
func (s set) String() string {
if len(s) == 0 {
return "β
"
}
var buf strings.Builder
buf.WriteRune('{')
for i, e := range s {
if i > 0 {
buf.WriteRune(',')
}
buf.WriteString(e.String())
}
buf.WriteRune('}')
return buf.String()
}
func (s set) powerSet() set {
r := set{set{}}
for _, es := range s {
var u set
for _, er := range r {
er := er.(set)
u = append(u, append(er[:len(er):len(er)], es))
}
r = append(r, u...)
}
return r
}
func main() {
var s set
for _, i := range []Int{1, 2, 2, 3, 4, 4, 4} {
s.add(i)
}
fmt.Println(" s:", s, "length:", len(s))
ps := s.powerSet()
fmt.Println(" π·(s):", ps, "length:", len(ps))
fmt.Println("\n(extra credit)")
var empty set
fmt.Println(" empty:", empty, "len:", len(empty))
ps = empty.powerSet()
fmt.Println(" π·(β
):", ps, "len:", len(ps))
ps = ps.powerSet()
fmt.Println("π·(π·(β
)):", ps, "len:", len(ps))
fmt.Println("\n(regression test for earlier bug)")
s = set{Int(1), Int(2), Int(3), Int(4), Int(5)}
fmt.Println(" s:", s, "length:", len(s), "ok:", s.ok())
ps = s.powerSet()
fmt.Println(" π·(s):", "length:", len(ps), "ok:", ps.ok())
for _, e := range ps {
if !e.(set).ok() {
panic("invalid set in ps")
}
}
}
|
Rewrite this program in C while keeping its functionality equivalent to the Swift version. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| #include <stdio.h>
struct node {
char *s;
struct node* prev;
};
void powerset(char **v, int n, struct node *up)
{
struct node me;
if (!n) {
putchar('[');
while (up) {
printf(" %s", up->s);
up = up->prev;
}
puts(" ]");
} else {
me.s = *v;
me.prev = up;
powerset(v + 1, n - 1, up);
powerset(v + 1, n - 1, &me);
}
}
int main(int argc, char **argv)
{
powerset(argv + 1, argc - 1, 0);
return 0;
}
|
Generate an equivalent C# version of this Swift code. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| public IEnumerable<IEnumerable<T>> GetPowerSet<T>(List<T> list)
{
return from m in Enumerable.Range(0, 1 << list.Count)
select
from i in Enumerable.Range(0, list.Count)
where (m & (1 << i)) != 0
select list[i];
}
public void PowerSetofColors()
{
var colors = new List<KnownColor> { KnownColor.Red, KnownColor.Green,
KnownColor.Blue, KnownColor.Yellow };
var result = GetPowerSet(colors);
Console.Write( string.Join( Environment.NewLine,
result.Select(subset =>
string.Join(",", subset.Select(clr => clr.ToString()).ToArray())).ToArray()));
}
|
Ensure the translated C++ code behaves exactly like the original Swift snippet. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| #include <iostream>
#include <set>
#include <vector>
#include <iterator>
#include <algorithm>
typedef std::set<int> set_type;
typedef std::set<set_type> powerset_type;
powerset_type powerset(set_type const& set)
{
typedef set_type::const_iterator set_iter;
typedef std::vector<set_iter> vec;
typedef vec::iterator vec_iter;
struct local
{
static int dereference(set_iter v) { return *v; }
};
powerset_type result;
vec elements;
do
{
set_type tmp;
std::transform(elements.begin(), elements.end(),
std::inserter(tmp, tmp.end()),
local::dereference);
result.insert(tmp);
if (!elements.empty() && ++elements.back() == set.end())
{
elements.pop_back();
}
else
{
set_iter iter;
if (elements.empty())
{
iter = set.begin();
}
else
{
iter = elements.back();
++iter;
}
for (; iter != set.end(); ++iter)
{
elements.push_back(iter);
}
}
} while (!elements.empty());
return result;
}
int main()
{
int values[4] = { 2, 3, 5, 7 };
set_type test_set(values, values+4);
powerset_type test_powerset = powerset(test_set);
for (powerset_type::iterator iter = test_powerset.begin();
iter != test_powerset.end();
++iter)
{
std::cout << "{ ";
char const* prefix = "";
for (set_type::iterator iter2 = iter->begin();
iter2 != iter->end();
++iter2)
{
std::cout << prefix << *iter2;
prefix = ", ";
}
std::cout << " }\n";
}
}
|
Port the following code from Swift to Java with equivalent syntax and logic. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| public static ArrayList<String> getpowerset(int a[],int n,ArrayList<String> ps)
{
if(n<0)
{
return null;
}
if(n==0)
{
if(ps==null)
ps=new ArrayList<String>();
ps.add(" ");
return ps;
}
ps=getpowerset(a, n-1, ps);
ArrayList<String> tmp=new ArrayList<String>();
for(String s:ps)
{
if(s.equals(" "))
tmp.add(""+a[n-1]);
else
tmp.add(s+a[n-1]);
}
ps.addAll(tmp);
return ps;
}
|
Rewrite the snippet below in Python so it works the same as the original Swift code. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| def list_powerset(lst):
result = [[]]
for x in lst:
result.extend([subset + [x] for subset in result])
return result
def list_powerset2(lst):
return reduce(lambda result, x: result + [subset + [x] for subset in result],
lst, [[]])
def powerset(s):
return frozenset(map(frozenset, list_powerset(list(s))))
|
Write the same algorithm in VB as shown in this Swift implementation. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| Option Base 1
Private Function power_set(ByRef st As Collection) As Collection
Dim subset As Collection, pwset As New Collection
For i = 0 To 2 ^ st.Count - 1
Set subset = New Collection
For j = 1 To st.Count
If i And 2 ^ (j - 1) Then subset.Add st(j)
Next j
pwset.Add subset
Next i
Set power_set = pwset
End Function
Private Function print_set(ByRef st As Collection) As String
Dim s() As String, t() As String
ReDim s(st.Count)
For i = 1 To st.Count
If st(i).Count > 0 Then
ReDim t(st(i).Count)
For j = 1 To st(i).Count
Select Case TypeName(st(i)(j))
Case "Integer": t(j) = CStr(st(i)(j))
Case "Collection": t(j) = "{}"
End Select
Next j
s(i) = "{" & Join(t, ", ") & "}"
Else
s(i) = "{}"
End If
Next i
print_set = "{" & Join(s, ", ") & "}"
End Function
Public Sub rc()
Dim rcset As New Collection, result As Collection
For i = 1 To 4
rcset.Add i
Next i
Debug.Print print_set(power_set(rcset))
Set rcset = New Collection
Debug.Print print_set(power_set(rcset))
Dim emptyset As New Collection
rcset.Add emptyset
Debug.Print print_set(power_set(rcset))
Debug.Print
End Sub
|
Translate the given Swift code snippet into Go without altering its behavior. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| package main
import (
"fmt"
"strconv"
"strings"
)
type elem interface {
Eq(elem) bool
fmt.Stringer
}
type Int int
func (i Int) Eq(e elem) bool {
j, ok := e.(Int)
return ok && i == j
}
func (i Int) String() string {
return strconv.Itoa(int(i))
}
type set []elem
func (s *set) add(e elem) {
if !s.has(e) {
*s = append(*s, e)
}
}
func (s *set) has(e elem) bool {
for _, ex := range *s {
if e.Eq(ex) {
return true
}
}
return false
}
func (s set) ok() bool {
for i, e0 := range s {
for _, e1 := range s[i+1:] {
if e0.Eq(e1) {
return false
}
}
}
return true
}
func (s set) Eq(e elem) bool {
t, ok := e.(set)
if !ok {
return false
}
if len(s) != len(t) {
return false
}
for _, se := range s {
if !t.has(se) {
return false
}
}
return true
}
func (s set) String() string {
if len(s) == 0 {
return "β
"
}
var buf strings.Builder
buf.WriteRune('{')
for i, e := range s {
if i > 0 {
buf.WriteRune(',')
}
buf.WriteString(e.String())
}
buf.WriteRune('}')
return buf.String()
}
func (s set) powerSet() set {
r := set{set{}}
for _, es := range s {
var u set
for _, er := range r {
er := er.(set)
u = append(u, append(er[:len(er):len(er)], es))
}
r = append(r, u...)
}
return r
}
func main() {
var s set
for _, i := range []Int{1, 2, 2, 3, 4, 4, 4} {
s.add(i)
}
fmt.Println(" s:", s, "length:", len(s))
ps := s.powerSet()
fmt.Println(" π·(s):", ps, "length:", len(ps))
fmt.Println("\n(extra credit)")
var empty set
fmt.Println(" empty:", empty, "len:", len(empty))
ps = empty.powerSet()
fmt.Println(" π·(β
):", ps, "len:", len(ps))
ps = ps.powerSet()
fmt.Println("π·(π·(β
)):", ps, "len:", len(ps))
fmt.Println("\n(regression test for earlier bug)")
s = set{Int(1), Int(2), Int(3), Int(4), Int(5)}
fmt.Println(" s:", s, "length:", len(s), "ok:", s.ok())
ps = s.powerSet()
fmt.Println(" π·(s):", "length:", len(ps), "ok:", ps.ok())
for _, e := range ps {
if !e.(set).ok() {
panic("invalid set in ps")
}
}
}
|
Change the programming language of this snippet from Tcl to C without modifying what it does. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| #include <stdio.h>
struct node {
char *s;
struct node* prev;
};
void powerset(char **v, int n, struct node *up)
{
struct node me;
if (!n) {
putchar('[');
while (up) {
printf(" %s", up->s);
up = up->prev;
}
puts(" ]");
} else {
me.s = *v;
me.prev = up;
powerset(v + 1, n - 1, up);
powerset(v + 1, n - 1, &me);
}
}
int main(int argc, char **argv)
{
powerset(argv + 1, argc - 1, 0);
return 0;
}
|
Port the provided Tcl code into C# while preserving the original functionality. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| public IEnumerable<IEnumerable<T>> GetPowerSet<T>(List<T> list)
{
return from m in Enumerable.Range(0, 1 << list.Count)
select
from i in Enumerable.Range(0, list.Count)
where (m & (1 << i)) != 0
select list[i];
}
public void PowerSetofColors()
{
var colors = new List<KnownColor> { KnownColor.Red, KnownColor.Green,
KnownColor.Blue, KnownColor.Yellow };
var result = GetPowerSet(colors);
Console.Write( string.Join( Environment.NewLine,
result.Select(subset =>
string.Join(",", subset.Select(clr => clr.ToString()).ToArray())).ToArray()));
}
|
Please provide an equivalent version of this Tcl code in C++. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| #include <iostream>
#include <set>
#include <vector>
#include <iterator>
#include <algorithm>
typedef std::set<int> set_type;
typedef std::set<set_type> powerset_type;
powerset_type powerset(set_type const& set)
{
typedef set_type::const_iterator set_iter;
typedef std::vector<set_iter> vec;
typedef vec::iterator vec_iter;
struct local
{
static int dereference(set_iter v) { return *v; }
};
powerset_type result;
vec elements;
do
{
set_type tmp;
std::transform(elements.begin(), elements.end(),
std::inserter(tmp, tmp.end()),
local::dereference);
result.insert(tmp);
if (!elements.empty() && ++elements.back() == set.end())
{
elements.pop_back();
}
else
{
set_iter iter;
if (elements.empty())
{
iter = set.begin();
}
else
{
iter = elements.back();
++iter;
}
for (; iter != set.end(); ++iter)
{
elements.push_back(iter);
}
}
} while (!elements.empty());
return result;
}
int main()
{
int values[4] = { 2, 3, 5, 7 };
set_type test_set(values, values+4);
powerset_type test_powerset = powerset(test_set);
for (powerset_type::iterator iter = test_powerset.begin();
iter != test_powerset.end();
++iter)
{
std::cout << "{ ";
char const* prefix = "";
for (set_type::iterator iter2 = iter->begin();
iter2 != iter->end();
++iter2)
{
std::cout << prefix << *iter2;
prefix = ", ";
}
std::cout << " }\n";
}
}
|
Port the provided Tcl code into Java while preserving the original functionality. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| public static ArrayList<String> getpowerset(int a[],int n,ArrayList<String> ps)
{
if(n<0)
{
return null;
}
if(n==0)
{
if(ps==null)
ps=new ArrayList<String>();
ps.add(" ");
return ps;
}
ps=getpowerset(a, n-1, ps);
ArrayList<String> tmp=new ArrayList<String>();
for(String s:ps)
{
if(s.equals(" "))
tmp.add(""+a[n-1]);
else
tmp.add(s+a[n-1]);
}
ps.addAll(tmp);
return ps;
}
|
Preserve the algorithm and functionality while converting the code from Tcl to Python. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| def list_powerset(lst):
result = [[]]
for x in lst:
result.extend([subset + [x] for subset in result])
return result
def list_powerset2(lst):
return reduce(lambda result, x: result + [subset + [x] for subset in result],
lst, [[]])
def powerset(s):
return frozenset(map(frozenset, list_powerset(list(s))))
|
Port the following code from Tcl to VB with equivalent syntax and logic. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| Option Base 1
Private Function power_set(ByRef st As Collection) As Collection
Dim subset As Collection, pwset As New Collection
For i = 0 To 2 ^ st.Count - 1
Set subset = New Collection
For j = 1 To st.Count
If i And 2 ^ (j - 1) Then subset.Add st(j)
Next j
pwset.Add subset
Next i
Set power_set = pwset
End Function
Private Function print_set(ByRef st As Collection) As String
Dim s() As String, t() As String
ReDim s(st.Count)
For i = 1 To st.Count
If st(i).Count > 0 Then
ReDim t(st(i).Count)
For j = 1 To st(i).Count
Select Case TypeName(st(i)(j))
Case "Integer": t(j) = CStr(st(i)(j))
Case "Collection": t(j) = "{}"
End Select
Next j
s(i) = "{" & Join(t, ", ") & "}"
Else
s(i) = "{}"
End If
Next i
print_set = "{" & Join(s, ", ") & "}"
End Function
Public Sub rc()
Dim rcset As New Collection, result As Collection
For i = 1 To 4
rcset.Add i
Next i
Debug.Print print_set(power_set(rcset))
Set rcset = New Collection
Debug.Print print_set(power_set(rcset))
Dim emptyset As New Collection
rcset.Add emptyset
Debug.Print print_set(power_set(rcset))
Debug.Print
End Sub
|
Change the programming language of this snippet from Tcl to Go without modifying what it does. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| package main
import (
"fmt"
"strconv"
"strings"
)
type elem interface {
Eq(elem) bool
fmt.Stringer
}
type Int int
func (i Int) Eq(e elem) bool {
j, ok := e.(Int)
return ok && i == j
}
func (i Int) String() string {
return strconv.Itoa(int(i))
}
type set []elem
func (s *set) add(e elem) {
if !s.has(e) {
*s = append(*s, e)
}
}
func (s *set) has(e elem) bool {
for _, ex := range *s {
if e.Eq(ex) {
return true
}
}
return false
}
func (s set) ok() bool {
for i, e0 := range s {
for _, e1 := range s[i+1:] {
if e0.Eq(e1) {
return false
}
}
}
return true
}
func (s set) Eq(e elem) bool {
t, ok := e.(set)
if !ok {
return false
}
if len(s) != len(t) {
return false
}
for _, se := range s {
if !t.has(se) {
return false
}
}
return true
}
func (s set) String() string {
if len(s) == 0 {
return "β
"
}
var buf strings.Builder
buf.WriteRune('{')
for i, e := range s {
if i > 0 {
buf.WriteRune(',')
}
buf.WriteString(e.String())
}
buf.WriteRune('}')
return buf.String()
}
func (s set) powerSet() set {
r := set{set{}}
for _, es := range s {
var u set
for _, er := range r {
er := er.(set)
u = append(u, append(er[:len(er):len(er)], es))
}
r = append(r, u...)
}
return r
}
func main() {
var s set
for _, i := range []Int{1, 2, 2, 3, 4, 4, 4} {
s.add(i)
}
fmt.Println(" s:", s, "length:", len(s))
ps := s.powerSet()
fmt.Println(" π·(s):", ps, "length:", len(ps))
fmt.Println("\n(extra credit)")
var empty set
fmt.Println(" empty:", empty, "len:", len(empty))
ps = empty.powerSet()
fmt.Println(" π·(β
):", ps, "len:", len(ps))
ps = ps.powerSet()
fmt.Println("π·(π·(β
)):", ps, "len:", len(ps))
fmt.Println("\n(regression test for earlier bug)")
s = set{Int(1), Int(2), Int(3), Int(4), Int(5)}
fmt.Println(" s:", s, "length:", len(s), "ok:", s.ok())
ps = s.powerSet()
fmt.Println(" π·(s):", "length:", len(ps), "ok:", ps.ok())
for _, e := range ps {
if !e.(set).ok() {
panic("invalid set in ps")
}
}
}
|
Keep all operations the same but rewrite the snippet in PHP. | use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Write a version of this Ada function in PHP with identical behavior. | with Ada.Text_IO, Ada.Command_Line;
use Ada.Text_IO, Ada.Command_Line;
procedure powerset is
begin
for set in 0..2**Argument_Count-1 loop
Put ("{");
declare
k : natural := set;
first : boolean := true;
begin
for i in 1..Argument_Count loop
if k mod 2 = 1 then
Put ((if first then "" else ",") & Argument (i));
first := false;
end if;
k := k / 2;
end loop;
end;
Put_Line("}");
end loop;
end powerset;
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Translate the given Arturo code snippet into PHP without altering its behavior. | print powerset [1 2 3 4]
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Rewrite this program in PHP while keeping its functionality equivalent to the AutoHotKey version. | a = 1,a,-- Β
StringSplit a, a, `, Β
t = {
Loop % (1<<a0) { Β
x := A_Index-1
Loop % a0
t .= (x>>A_Index-1) & 1 ? a%A_Index% "," : ""
t .= "}`n{" Β
}
MsgBox % RegExReplace(SubStr(t,1,StrLen(t)-1),",}","}")
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Rewrite the snippet below in PHP so it works the same as the original AWK code. | cat power_set.awk
function tochar(l,n, r) {
while (l) { n--; if (l%2 != 0) r = r sprintf(" %c ",49+n); l = int(l/2) }; return r
}
{ for (i=0;i<=2^NF-1;i++) if (i == 0) printf("empty\n"); else printf("(%s)\n",tochar(i,NF)) }
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Preserve the algorithm and functionality while converting the code from BBC_Basic to PHP. | DIM list$(3) : list$() = "1", "2", "3", "4"
PRINT FNpowerset(list$())
END
DEF FNpowerset(list$())
IF DIM(list$(),1) > 31 ERROR 100, "Set too large to represent as integer"
LOCAL i%, j%, s$
s$ = "{"
FOR i% = 0 TO (2 << DIM(list$(),1)) - 1
s$ += "{"
FOR j% = 0 TO DIM(list$(),1)
IF i% AND (1 << j%) s$ += list$(j%) + ","
NEXT
IF RIGHT$(s$) = "," s$ = LEFT$(s$)
s$ += "},"
NEXT i%
= LEFT$(s$) + "}"
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Write the same code in PHP as shown below in Clojure. | (use '[clojure.math.combinatorics :only [subsets] ])
(def S #{1 2 3 4})
user> (subsets S)
(() (1) (2) (3) (4) (1 2) (1 3) (1 4) (2 3) (2 4) (3 4) (1 2 3) (1 2 4) (1 3 4) (2 3 4) (1 2 3 4))
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Generate a PHP translation of this Common_Lisp snippet without changing its computational steps. | (defun powerset (s)
(if s (mapcan (lambda (x) (list (cons (car s) x) x))
(powerset (cdr s)))
'(())))
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Change the following D code into PHP without altering its purpose. | import std.algorithm;
import std.range;
auto powerSet(R)(R r)
{
return
(1L<<r.length)
.iota
.map!(i =>
r.enumerate
.filter!(t => (1<<t[0]) & i)
.map!(t => t[1])
);
}
unittest
{
int[] emptyArr;
assert(emptyArr.powerSet.equal!equal([emptyArr]));
assert(emptyArr.powerSet.powerSet.equal!(equal!equal)([[], [emptyArr]]));
}
void main(string[] args)
{
import std.stdio;
args[1..$].powerSet.each!writeln;
}
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Ensure the translated PHP code behaves exactly like the original Delphi snippet. | program Power_set;
uses
System.SysUtils;
const
n = 4;
var
buf: TArray<Integer>;
procedure rec(ind, bg: Integer);
begin
for var i := bg to n - 1 do
begin
buf[ind] := i;
for var j := 0 to ind do
write(buf[j]: 2);
writeln;
rec(ind + 1, buf[ind] + 1);
end;
end;
begin
SetLength(buf, n);
rec(0,0);
readln;
end.
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Port the provided Elixir code into PHP while preserving the original functionality. | defmodule RC do
use Bitwise
def powerset1(list) do
n = length(list)
max = round(:math.pow(2,n))
for i <- 0..max-1, do: (for pos <- 0..n-1, band(i, bsl(1, pos)) != 0, do: Enum.at(list, pos) )
end
def powerset2([]), do: [[]]
def powerset2([h|t]) do
pt = powerset2(t)
(for x <- pt, do: [h|x]) ++ pt
end
def powerset3([]), do: [[]]
def powerset3([h|t]) do
pt = powerset3(t)
powerset3(h, pt, pt)
end
defp powerset3(_, [], acc), do: acc
defp powerset3(x, [h|t], acc), do: powerset3(x, t, [[x|h] | acc])
end
IO.inspect RC.powerset1([1,2,3])
IO.inspect RC.powerset2([1,2,3])
IO.inspect RC.powerset3([1,2,3])
IO.inspect RC.powerset1([])
IO.inspect RC.powerset1(["one"])
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Please provide an equivalent version of this Erlang code in PHP. | powerset(Lst) ->
N = length(Lst),
Max = trunc(math:pow(2,N)),
[[lists:nth(Pos+1,Lst) || Pos <- lists:seq(0,N-1), I band (1 bsl Pos) =/= 0]
|| I <- lists:seq(0,Max-1)].
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Produce a language-to-language conversion: from F# to PHP, same semantics. | let subsets xs = List.foldBack (fun x rest -> rest @ List.map (fun ys -> x::ys) rest) xs [[]]
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Ensure the translated PHP code behaves exactly like the original Factor snippet. | USING: kernel prettyprint sequences arrays sets hash-sets ;
IN: powerset
: add ( set elt -- newset ) 1array <hash-set> union ;
: powerset ( set -- newset ) members { HS{ } } [ dupd [ add ] curry map append ] reduce <hash-set> ;
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Transform the following Forth implementation into PHP, maintaining the same output and logic. | : ?print dup 1 and if over args type space then ;
: .set begin dup while ?print >r 1+ r> 1 rshift repeat drop drop ;
: .powerset 0 do ." " cr loop ;
: check-none dup 2 < abort" Usage: powerset [val] .. [val]" ;
: check-size dup /cell 8 [*] >= abort" Set too large" ;
: powerset 1 argn check-none check-size 1- lshift .powerset ;
powerset
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Convert the following code from Groovy to PHP, ensuring the logic remains intact. | def powerSetRec(head, tail) {
if (!tail) return [head]
powerSetRec(head, tail.tail()) + powerSetRec(head + [tail.head()], tail.tail())
}
def powerSet(set) { powerSetRec([], set as List) as Set}
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Please provide an equivalent version of this Haskell code in PHP. | import Data.Set
import Control.Monad
powerset :: Ord a => Set a -> Set (Set a)
powerset = fromList . fmap fromList . listPowerset . toList
listPowerset :: [a] -> [[a]]
listPowerset = filterM (const [True, False])
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Can you help me rewrite this code in PHP instead of Icon, keeping it the same logically? | procedure power_set (s)
result := set ()
if *s = 0
then insert (result, set ())
else {
head := set(?s)
tail_pset := power_set (x -- head)
result ++:= tail_pset
every ps := !tail_pset do
insert (result, ps ++ head)
}
return result
end
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Produce a language-to-language conversion: from J to PHP, same semantics. | ps =: #~ 2 #:@i.@^ #
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Generate a PHP translation of this Julia snippet without changing its computational steps. | function powerset(x::Vector{T})::Vector{Vector{T}} where T
result = Vector{T}[[]]
for elem in x, j in eachindex(result)
push!(result, [result[j] ; elem])
end
result
end
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Rewrite the snippet below in PHP so it works the same as the original Lua code. |
function powerset(s, start)
start = start or 1
if(start > #s) then return {{}} end
local ret = powerset(s, start + 1)
for i = 1, #ret do
ret[#ret + 1] = {s[start], unpack(ret[i])}
end
return ret
end
function powerset(s)
local t = {{}}
for i = 1, #s do
for j = 1, #t do
t[#t+1] = {s[i],unpack(t[j])}
end
end
return t
end
function powerset2(s)
local ret = {{}}
for i = 1, #s do
local k = #ret
for j = 1, k do
ret[k + j] = {s[i], unpack(ret[j])}
end
end
return ret
end
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Convert the following code from Mathematica to PHP, ensuring the logic remains intact. | Subsets[{a, b, c}]
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Convert the following code from MATLAB to PHP, ensuring the logic remains intact. | function pset = powerset(theSet)
pset = cell(size(theSet));
for i = ( 0:(2^numel(theSet))-1 )
indicies = logical(bitget( i,(1:numel(theSet)) ));
pset(i+1) = {theSet(indicies)};
end
end
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Write the same code in PHP as shown below in Nim. | import sets, hashes
proc hash(x: HashSet[int]): Hash =
var h = 0
for i in x: h = h !& hash(i)
result = !$h
proc powerset[T](inset: HashSet[T]): HashSet[HashSet[T]] =
result.incl(initHashSet[T]())
for val in inset:
let previous = result
for aSet in previous:
var newSet = aSet
newSet.incl(val)
result.incl(newSet)
echo powerset([1,2,3,4].toHashSet())
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Translate the given OCaml code snippet into PHP without altering its behavior. | module PowerSet(S: Set.S) =
struct
include Set.Make (S)
let map f s =
let work x r = add (f x) r in
fold work s empty
;;
let powerset s =
let base = singleton (S.empty) in
let work x r = union r (map (S.add x) r) in
S.fold work s base
;;
end;;
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Convert this Perl snippet to PHP and keep its semantics consistent. | use Algorithm::Combinatorics "subsets";
my @S = ("a","b","c");
my @PS;
my $iter = subsets(\@S);
while (my $p = $iter->next) {
push @PS, "[@$p]"
}
say join(" ",@PS);
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Produce a functionally identical PHP code for the snippet given in PowerShell. | function power-set ($array) {
if($array) {
$n = $array.Count
function state($set, $i){
if($i -gt -1) {
state $set ($i-1)
state ($set+@($array[$i])) ($i-1)
} else {
"$($set | sort)"
}
}
$set = state @() ($n-1)
$power = 0..($set.Count-1) | foreach{@(0)}
$i = 0
$set | sort | foreach{$power[$i++] = $_.Split()}
$power | sort {$_.Count}
} else {@()}
}
$OFS = " "
$setA = power-set @(1,2,3,4)
"number of sets in setA: $($setA.Count)"
"sets in setA:"
$OFS = ", "
$setA | foreach{"{"+"$_"+"}"}
$setB = @()
"number of sets in setB: $($setB.Count)"
"sets in setB:"
$setB | foreach{"{"+"$_"+"}"}
$setC = @(@(), @(@()))
"number of sets in setC: $($setC.Count)"
"sets in setC:"
$setC | foreach{"{"+"$_"+"}"}
$OFS = " "
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Translate this program into PHP but keep the logic exactly as in R. | powerset <- function(set){
ps <- list()
ps[[1]] <- numeric()
for(element in set){
temp <- vector(mode="list",length=length(ps))
for(subset in 1:length(ps)){
temp[[subset]] = c(ps[[subset]],element)
}
ps <- c(ps,temp)
}
ps
}
powerset(1:4)
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Generate an equivalent PHP version of this Racket code. |
(define (powerset s)
(for/fold ([outer-set (set(set))]) ([element s])
(set-union outer-set
(list->set (set-map outer-set
(Ξ»(inner-set) (set-add inner-set element)))))))
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Change the programming language of this snippet from REXX to PHP without modifying what it does. |
parse arg S
if S='' then S= 'one two three four'
@= '{}'
N= words(S); do chunk=1 for N
@=@ combN(N, chunk)
end
w= length(2**N)
do k=1 for words(@)
say right(k, w) word(@, k)
end
exit 0
combN: procedure expose S; parse arg x,y; base= x + 1; bbase= base - y
!.= 0
do p=1 for y; !.p= p
end
$=
do j=1; L=
do d=1 for y; L= L','word(S, !.d)
end
$= $ '{'strip(L, "L", ',')"}"; !.y= !.y + 1
if !.y==base then if .combU(y - 1) then leave
end
return strip($)
.combU: procedure expose !. y bbase; parse arg d; if d==0 then return 1
p= !.d
do u=d to y; !.u= p + 1; if !.u==bbase+u then return .combU(u-1)
p= !.u
end
return 0
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Please provide an equivalent version of this Ruby code in PHP. |
class Array
def power_set
inject([[]]) do |acc, you|
ret = []
acc.each do |i|
ret << i
ret << i + [you]
end
ret
end
end
def func_power_set
inject([[]]) { |ps,item|
ps +
ps.map { |e| e + [item] }
}
end
end
require 'set'
class Set
def powerset
inject(Set[Set[]]) do |ps, item|
ps.union ps.map {|e| e.union (Set.new [item])}
end
end
end
p [1,2,3,4].power_set
p %w(one two three).func_power_set
p Set[1,2,3].powerset
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Convert this Scala block to PHP, preserving its control flow and logic. |
fun <T> Set<T>.subsets(): Sequence<Set<T>> =
when (size) {
0 -> sequenceOf(emptySet())
else -> {
val head = first()
val tail = this - head
tail.subsets() + tail.subsets().map { setOf(head) + it }
}
}
fun <T> Set<T>.subsets(): Sequence<Set<T>> = sequence {
when (size) {
0 -> yield(emptySet<T>())
else -> {
val head = first()
val tail = this@subsets - head
yieldAll(tail.subsets())
for (subset in tail.subsets()) {
yield(setOf(head) + subset)
}
}
}
}
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Write the same algorithm in PHP as shown in this Swift implementation. | func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
guard elements.count > 0 else {
return [[]]
}
var powerset: Set<Set<T>> = [[]]
for element in elements {
for subset in powerset {
powerset.insert(subset.union([element]))
}
}
return powerset
}
powersetFrom([1, 2, 4])
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Translate the given Tcl code snippet into PHP without altering its behavior. | proc subsets {l} {
set res [list [list]]
foreach e $l {
foreach subset $res {lappend res [lappend subset $e]}
}
return $res
}
puts [subsets {a b c d}]
| <?php
function get_subset($binary, $arr) {
$subset = array();
foreach (range(0, count($arr)-1) as $i) {
if ($binary[$i]) {
$subset[] = $arr[count($arr) - $i - 1];
}
}
return $subset;
}
function print_array($arr) {
if (count($arr) > 0) {
echo join(" ", $arr);
} else {
echo "(empty)";
}
echo '<br>';
}
function print_power_sets($arr) {
echo "POWER SET of [" . join(", ", $arr) . "]<br>";
foreach (power_set($arr) as $subset) {
print_array($subset);
}
}
function power_set($arr) {
$binary = array();
foreach (range(1, count($arr)) as $i) {
$binary[] = false;
}
$n = count($arr);
$powerset = array();
while (count($binary) <= count($arr)) {
$powerset[] = get_subset($binary, $arr);
$i = 0;
while (true) {
if ($binary[$i]) {
$binary[$i] = false;
$i += 1;
} else {
$binary[$i] = true;
break;
}
}
$binary[$i] = true;
}
return $powerset;
}
print_power_sets(array());
print_power_sets(array('singleton'));
print_power_sets(array('dog', 'c', 'b', 'a'));
?>
|
Produce a functionally identical Rust code for the snippet given in C. | #include <stdio.h>
struct node {
char *s;
struct node* prev;
};
void powerset(char **v, int n, struct node *up)
{
struct node me;
if (!n) {
putchar('[');
while (up) {
printf(" %s", up->s);
up = up->prev;
}
puts(" ]");
} else {
me.s = *v;
me.prev = up;
powerset(v + 1, n - 1, up);
powerset(v + 1, n - 1, &me);
}
}
int main(int argc, char **argv)
{
powerset(argv + 1, argc - 1, 0);
return 0;
}
| use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
|
Convert the following code from C++ to Rust, ensuring the logic remains intact. | #include <iostream>
#include <set>
#include <vector>
#include <iterator>
#include <algorithm>
typedef std::set<int> set_type;
typedef std::set<set_type> powerset_type;
powerset_type powerset(set_type const& set)
{
typedef set_type::const_iterator set_iter;
typedef std::vector<set_iter> vec;
typedef vec::iterator vec_iter;
struct local
{
static int dereference(set_iter v) { return *v; }
};
powerset_type result;
vec elements;
do
{
set_type tmp;
std::transform(elements.begin(), elements.end(),
std::inserter(tmp, tmp.end()),
local::dereference);
result.insert(tmp);
if (!elements.empty() && ++elements.back() == set.end())
{
elements.pop_back();
}
else
{
set_iter iter;
if (elements.empty())
{
iter = set.begin();
}
else
{
iter = elements.back();
++iter;
}
for (; iter != set.end(); ++iter)
{
elements.push_back(iter);
}
}
} while (!elements.empty());
return result;
}
int main()
{
int values[4] = { 2, 3, 5, 7 };
set_type test_set(values, values+4);
powerset_type test_powerset = powerset(test_set);
for (powerset_type::iterator iter = test_powerset.begin();
iter != test_powerset.end();
++iter)
{
std::cout << "{ ";
char const* prefix = "";
for (set_type::iterator iter2 = iter->begin();
iter2 != iter->end();
++iter2)
{
std::cout << prefix << *iter2;
prefix = ", ";
}
std::cout << " }\n";
}
}
| use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
|
Generate a Rust translation of this C# snippet without changing its computational steps. | public IEnumerable<IEnumerable<T>> GetPowerSet<T>(List<T> list)
{
return from m in Enumerable.Range(0, 1 << list.Count)
select
from i in Enumerable.Range(0, list.Count)
where (m & (1 << i)) != 0
select list[i];
}
public void PowerSetofColors()
{
var colors = new List<KnownColor> { KnownColor.Red, KnownColor.Green,
KnownColor.Blue, KnownColor.Yellow };
var result = GetPowerSet(colors);
Console.Write( string.Join( Environment.NewLine,
result.Select(subset =>
string.Join(",", subset.Select(clr => clr.ToString()).ToArray())).ToArray()));
}
| use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
|
Maintain the same structure and functionality when rewriting this code in Rust. | public static ArrayList<String> getpowerset(int a[],int n,ArrayList<String> ps)
{
if(n<0)
{
return null;
}
if(n==0)
{
if(ps==null)
ps=new ArrayList<String>();
ps.add(" ");
return ps;
}
ps=getpowerset(a, n-1, ps);
ArrayList<String> tmp=new ArrayList<String>();
for(String s:ps)
{
if(s.equals(" "))
tmp.add(""+a[n-1]);
else
tmp.add(s+a[n-1]);
}
ps.addAll(tmp);
return ps;
}
| use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
|
Port the provided Go code into Rust while preserving the original functionality. | package main
import (
"fmt"
"strconv"
"strings"
)
type elem interface {
Eq(elem) bool
fmt.Stringer
}
type Int int
func (i Int) Eq(e elem) bool {
j, ok := e.(Int)
return ok && i == j
}
func (i Int) String() string {
return strconv.Itoa(int(i))
}
type set []elem
func (s *set) add(e elem) {
if !s.has(e) {
*s = append(*s, e)
}
}
func (s *set) has(e elem) bool {
for _, ex := range *s {
if e.Eq(ex) {
return true
}
}
return false
}
func (s set) ok() bool {
for i, e0 := range s {
for _, e1 := range s[i+1:] {
if e0.Eq(e1) {
return false
}
}
}
return true
}
func (s set) Eq(e elem) bool {
t, ok := e.(set)
if !ok {
return false
}
if len(s) != len(t) {
return false
}
for _, se := range s {
if !t.has(se) {
return false
}
}
return true
}
func (s set) String() string {
if len(s) == 0 {
return "β
"
}
var buf strings.Builder
buf.WriteRune('{')
for i, e := range s {
if i > 0 {
buf.WriteRune(',')
}
buf.WriteString(e.String())
}
buf.WriteRune('}')
return buf.String()
}
func (s set) powerSet() set {
r := set{set{}}
for _, es := range s {
var u set
for _, er := range r {
er := er.(set)
u = append(u, append(er[:len(er):len(er)], es))
}
r = append(r, u...)
}
return r
}
func main() {
var s set
for _, i := range []Int{1, 2, 2, 3, 4, 4, 4} {
s.add(i)
}
fmt.Println(" s:", s, "length:", len(s))
ps := s.powerSet()
fmt.Println(" π·(s):", ps, "length:", len(ps))
fmt.Println("\n(extra credit)")
var empty set
fmt.Println(" empty:", empty, "len:", len(empty))
ps = empty.powerSet()
fmt.Println(" π·(β
):", ps, "len:", len(ps))
ps = ps.powerSet()
fmt.Println("π·(π·(β
)):", ps, "len:", len(ps))
fmt.Println("\n(regression test for earlier bug)")
s = set{Int(1), Int(2), Int(3), Int(4), Int(5)}
fmt.Println(" s:", s, "length:", len(s), "ok:", s.ok())
ps = s.powerSet()
fmt.Println(" π·(s):", "length:", len(ps), "ok:", ps.ok())
for _, e := range ps {
if !e.(set).ok() {
panic("invalid set in ps")
}
}
}
| use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
|
Convert this Rust block to Python, preserving its control flow and logic. | use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
| def list_powerset(lst):
result = [[]]
for x in lst:
result.extend([subset + [x] for subset in result])
return result
def list_powerset2(lst):
return reduce(lambda result, x: result + [subset + [x] for subset in result],
lst, [[]])
def powerset(s):
return frozenset(map(frozenset, list_powerset(list(s))))
|
Ensure the translated VB code behaves exactly like the original Rust snippet. | use std::collections::BTreeSet;
fn powerset<T: Ord + Clone>(mut set: BTreeSet<T>) -> BTreeSet<BTreeSet<T>> {
if set.is_empty() {
let mut powerset = BTreeSet::new();
powerset.insert(set);
return powerset;
}
let entry = set.iter().nth(0).unwrap().clone();
set.remove(&entry);
let mut powerset = powerset(set);
for mut set in powerset.clone().into_iter() {
set.insert(entry.clone());
powerset.insert(set);
}
powerset
}
fn main() {
let set = (1..5).collect();
let set = powerset(set);
println!("{:?}", set);
let set = ["a", "b", "c", "d"].iter().collect();
let set = powerset(set);
println!("{:?}", set);
}
| Option Base 1
Private Function power_set(ByRef st As Collection) As Collection
Dim subset As Collection, pwset As New Collection
For i = 0 To 2 ^ st.Count - 1
Set subset = New Collection
For j = 1 To st.Count
If i And 2 ^ (j - 1) Then subset.Add st(j)
Next j
pwset.Add subset
Next i
Set power_set = pwset
End Function
Private Function print_set(ByRef st As Collection) As String
Dim s() As String, t() As String
ReDim s(st.Count)
For i = 1 To st.Count
If st(i).Count > 0 Then
ReDim t(st(i).Count)
For j = 1 To st(i).Count
Select Case TypeName(st(i)(j))
Case "Integer": t(j) = CStr(st(i)(j))
Case "Collection": t(j) = "{}"
End Select
Next j
s(i) = "{" & Join(t, ", ") & "}"
Else
s(i) = "{}"
End If
Next i
print_set = "{" & Join(s, ", ") & "}"
End Function
Public Sub rc()
Dim rcset As New Collection, result As Collection
For i = 1 To 4
rcset.Add i
Next i
Debug.Print print_set(power_set(rcset))
Set rcset = New Collection
Debug.Print print_set(power_set(rcset))
Dim emptyset As New Collection
rcset.Add emptyset
Debug.Print print_set(power_set(rcset))
Debug.Print
End Sub
|
Ensure the translated C# code behaves exactly like the original Ada snippet. | with Ada.Numerics.Generic_Elementary_Functions;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.GMP.Integers;
with GNATCOLL.GMP.Lib;
procedure Hamming is
type Log_Type is new Long_Long_Float;
package Funcs is new Ada.Numerics.Generic_Elementary_Functions (Log_Type);
type Factors_Array is array (Positive range <>) of Positive;
generic
Factors : Factors_Array := (2, 3, 5);
package Smooth_Numbers is
type Number is private;
function Compute (Nth : Positive) return Number;
function Image (N : Number) return String;
private
type Exponent_Type is new Natural;
type Exponents_Array is array (Factors'Range) of Exponent_Type;
type Number is record
Exponents : Exponents_Array;
Log : Log_Type;
end record;
function "=" (N1, N2 : Number) return Boolean
is (for all F in Factors'Range => N1.Exponents (F) = N2.Exponents (F));
end Smooth_Numbers;
package body Smooth_Numbers is
One : constant Number := (Exponents => (others => 0), Log => 0.0);
Factors_Log : array (Factors'Range) of Log_Type;
function Image (N : Number) return String is
use GNATCOLL.GMP.Integers, GNATCOLL.GMP.Lib;
R, Tmp : Big_Integer;
begin
Set (R, "1");
for F in Factors'Range loop
Set (Tmp, Factors (F)'Image);
Raise_To_N (Tmp, GNATCOLL.GMP.Unsigned_Long (N.Exponents (F)));
Multiply (R, Tmp);
end loop;
return Image (R);
end Image;
function Compute (Nth : Positive) return Number is
Candidates : array (Factors'Range) of Number;
Values : array (1 .. Nth) of Number;
Indices : array (Factors'Range) of Natural :=
(others => Values'First);
Current : Number;
Tmp : Number;
begin
for F in Factors'Range loop
Factors_Log (F) := Funcs.Log (Log_Type (Factors (F)));
Candidates (F) := One;
Candidates (F).Exponents (F) := 1;
Candidates (F).Log := Factors_Log (F);
end loop;
Values (1) := One;
for Count in 2 .. Nth loop
Current := Candidates (Factors'First);
for F in Factors'First + 1 .. Factors'Last loop
if Candidates (F).Log < Current.Log then
Current := Candidates (F);
end if;
end loop;
Values (Count) := Current;
for F in Factors'Range loop
if Candidates (F) = Current then
Indices (F) := Indices (F) + 1;
Tmp := Values (Indices (F));
Tmp.Exponents (F) := Tmp.Exponents (F) + 1;
Tmp.Log := Tmp.Log + Factors_Log (F);
Candidates (F) := Tmp;
end if;
end loop;
end loop;
return Values (Nth);
end Compute;
end Smooth_Numbers;
package Hamming is new Smooth_Numbers ((2, 3, 5));
begin
for N in 1 .. 20 loop
Put (" " & Hamming.Image (Hamming.Compute (N)));
end loop;
New_Line;
Put_Line (Hamming.Image (Hamming.Compute (1691)));
Put_Line (Hamming.Image (Hamming.Compute (1_000_000)));
end Hamming;
| using System;
using System.Numerics;
using System.Linq;
namespace Hamming {
class MainClass {
public static BigInteger Hamming(int n) {
BigInteger two = 2, three = 3, five = 5;
var h = new BigInteger[n];
h[0] = 1;
BigInteger x2 = 2, x3 = 3, x5 = 5;
int i = 0, j = 0, k = 0;
for (int index = 1; index < n; index++) {
h[index] = BigInteger.Min(x2, BigInteger.Min(x3, x5));
if (h[index] == x2) x2 = two * h[++i];
if (h[index] == x3) x3 = three * h[++j];
if (h[index] == x5) x5 = five * h[++k];
}
return h[n - 1];
}
public static void Main(string[] args) {
Console.WriteLine(string.Join(" ", Enumerable.Range(1, 20).ToList().Select(x => Hamming(x))));
Console.WriteLine(Hamming(1691));
Console.WriteLine(Hamming(1000000));
}
}
}
|
Change the following Ada code into C without altering its purpose. | with Ada.Numerics.Generic_Elementary_Functions;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.GMP.Integers;
with GNATCOLL.GMP.Lib;
procedure Hamming is
type Log_Type is new Long_Long_Float;
package Funcs is new Ada.Numerics.Generic_Elementary_Functions (Log_Type);
type Factors_Array is array (Positive range <>) of Positive;
generic
Factors : Factors_Array := (2, 3, 5);
package Smooth_Numbers is
type Number is private;
function Compute (Nth : Positive) return Number;
function Image (N : Number) return String;
private
type Exponent_Type is new Natural;
type Exponents_Array is array (Factors'Range) of Exponent_Type;
type Number is record
Exponents : Exponents_Array;
Log : Log_Type;
end record;
function "=" (N1, N2 : Number) return Boolean
is (for all F in Factors'Range => N1.Exponents (F) = N2.Exponents (F));
end Smooth_Numbers;
package body Smooth_Numbers is
One : constant Number := (Exponents => (others => 0), Log => 0.0);
Factors_Log : array (Factors'Range) of Log_Type;
function Image (N : Number) return String is
use GNATCOLL.GMP.Integers, GNATCOLL.GMP.Lib;
R, Tmp : Big_Integer;
begin
Set (R, "1");
for F in Factors'Range loop
Set (Tmp, Factors (F)'Image);
Raise_To_N (Tmp, GNATCOLL.GMP.Unsigned_Long (N.Exponents (F)));
Multiply (R, Tmp);
end loop;
return Image (R);
end Image;
function Compute (Nth : Positive) return Number is
Candidates : array (Factors'Range) of Number;
Values : array (1 .. Nth) of Number;
Indices : array (Factors'Range) of Natural :=
(others => Values'First);
Current : Number;
Tmp : Number;
begin
for F in Factors'Range loop
Factors_Log (F) := Funcs.Log (Log_Type (Factors (F)));
Candidates (F) := One;
Candidates (F).Exponents (F) := 1;
Candidates (F).Log := Factors_Log (F);
end loop;
Values (1) := One;
for Count in 2 .. Nth loop
Current := Candidates (Factors'First);
for F in Factors'First + 1 .. Factors'Last loop
if Candidates (F).Log < Current.Log then
Current := Candidates (F);
end if;
end loop;
Values (Count) := Current;
for F in Factors'Range loop
if Candidates (F) = Current then
Indices (F) := Indices (F) + 1;
Tmp := Values (Indices (F));
Tmp.Exponents (F) := Tmp.Exponents (F) + 1;
Tmp.Log := Tmp.Log + Factors_Log (F);
Candidates (F) := Tmp;
end if;
end loop;
end loop;
return Values (Nth);
end Compute;
end Smooth_Numbers;
package Hamming is new Smooth_Numbers ((2, 3, 5));
begin
for N in 1 .. 20 loop
Put (" " & Hamming.Image (Hamming.Compute (N)));
end loop;
New_Line;
Put_Line (Hamming.Image (Hamming.Compute (1691)));
Put_Line (Hamming.Image (Hamming.Compute (1_000_000)));
end Hamming;
| #include <stdio.h>
#include <stdlib.h>
typedef unsigned long long ham;
size_t alloc = 0, n = 1;
ham *q = 0;
void qpush(ham h)
{
int i, j;
if (alloc <= n) {
alloc = alloc ? alloc * 2 : 16;
q = realloc(q, sizeof(ham) * alloc);
}
for (i = n++; (j = i/2) && q[j] > h; q[i] = q[j], i = j);
q[i] = h;
}
ham qpop()
{
int i, j;
ham r, t;
for (r = q[1]; n > 1 && r == q[1]; q[i] = t) {
for (i = 1, t = q[--n]; (j = i * 2) < n;) {
if (j + 1 < n && q[j] > q[j+1]) j++;
if (t <= q[j]) break;
q[i] = q[j], i = j;
}
}
return r;
}
int main()
{
int i;
ham h;
for (qpush(i = 1); i <= 1691; i++) {
h = qpop();
qpush(h * 2);
qpush(h * 3);
qpush(h * 5);
if (i <= 20 || i == 1691)
printf("%6d: %llu\n", i, h);
}
return 0;
}
|
Convert this Ada block to C++, preserving its control flow and logic. | with Ada.Numerics.Generic_Elementary_Functions;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.GMP.Integers;
with GNATCOLL.GMP.Lib;
procedure Hamming is
type Log_Type is new Long_Long_Float;
package Funcs is new Ada.Numerics.Generic_Elementary_Functions (Log_Type);
type Factors_Array is array (Positive range <>) of Positive;
generic
Factors : Factors_Array := (2, 3, 5);
package Smooth_Numbers is
type Number is private;
function Compute (Nth : Positive) return Number;
function Image (N : Number) return String;
private
type Exponent_Type is new Natural;
type Exponents_Array is array (Factors'Range) of Exponent_Type;
type Number is record
Exponents : Exponents_Array;
Log : Log_Type;
end record;
function "=" (N1, N2 : Number) return Boolean
is (for all F in Factors'Range => N1.Exponents (F) = N2.Exponents (F));
end Smooth_Numbers;
package body Smooth_Numbers is
One : constant Number := (Exponents => (others => 0), Log => 0.0);
Factors_Log : array (Factors'Range) of Log_Type;
function Image (N : Number) return String is
use GNATCOLL.GMP.Integers, GNATCOLL.GMP.Lib;
R, Tmp : Big_Integer;
begin
Set (R, "1");
for F in Factors'Range loop
Set (Tmp, Factors (F)'Image);
Raise_To_N (Tmp, GNATCOLL.GMP.Unsigned_Long (N.Exponents (F)));
Multiply (R, Tmp);
end loop;
return Image (R);
end Image;
function Compute (Nth : Positive) return Number is
Candidates : array (Factors'Range) of Number;
Values : array (1 .. Nth) of Number;
Indices : array (Factors'Range) of Natural :=
(others => Values'First);
Current : Number;
Tmp : Number;
begin
for F in Factors'Range loop
Factors_Log (F) := Funcs.Log (Log_Type (Factors (F)));
Candidates (F) := One;
Candidates (F).Exponents (F) := 1;
Candidates (F).Log := Factors_Log (F);
end loop;
Values (1) := One;
for Count in 2 .. Nth loop
Current := Candidates (Factors'First);
for F in Factors'First + 1 .. Factors'Last loop
if Candidates (F).Log < Current.Log then
Current := Candidates (F);
end if;
end loop;
Values (Count) := Current;
for F in Factors'Range loop
if Candidates (F) = Current then
Indices (F) := Indices (F) + 1;
Tmp := Values (Indices (F));
Tmp.Exponents (F) := Tmp.Exponents (F) + 1;
Tmp.Log := Tmp.Log + Factors_Log (F);
Candidates (F) := Tmp;
end if;
end loop;
end loop;
return Values (Nth);
end Compute;
end Smooth_Numbers;
package Hamming is new Smooth_Numbers ((2, 3, 5));
begin
for N in 1 .. 20 loop
Put (" " & Hamming.Image (Hamming.Compute (N)));
end loop;
New_Line;
Put_Line (Hamming.Image (Hamming.Compute (1691)));
Put_Line (Hamming.Image (Hamming.Compute (1_000_000)));
end Hamming;
| #include <iostream>
#include <vector>
class Ham {
private:
std::vector<unsigned int> _H, _hp, _hv, _x;
public:
bool operator!=(const Ham& other) const {return true;}
Ham begin() const {return *this;}
Ham end() const {return *this;}
unsigned int operator*() const {return _x.back();}
Ham(const std::vector<unsigned int> &pfs):_H(pfs),_hp(pfs.size(),0),_hv({pfs}),_x({1}){}
const Ham& operator++() {
for (int i=0; i<_H.size(); i++) for (;_hv[i]<=_x.back();_hv[i]=_x[++_hp[i]]*_H[i]);
_x.push_back(_hv[0]);
for (int i=1; i<_H.size(); i++) if (_hv[i]<_x.back()) _x.back()=_hv[i];
return *this;
}
};
|
Preserve the algorithm and functionality while converting the code from Ada to Go. | with Ada.Numerics.Generic_Elementary_Functions;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.GMP.Integers;
with GNATCOLL.GMP.Lib;
procedure Hamming is
type Log_Type is new Long_Long_Float;
package Funcs is new Ada.Numerics.Generic_Elementary_Functions (Log_Type);
type Factors_Array is array (Positive range <>) of Positive;
generic
Factors : Factors_Array := (2, 3, 5);
package Smooth_Numbers is
type Number is private;
function Compute (Nth : Positive) return Number;
function Image (N : Number) return String;
private
type Exponent_Type is new Natural;
type Exponents_Array is array (Factors'Range) of Exponent_Type;
type Number is record
Exponents : Exponents_Array;
Log : Log_Type;
end record;
function "=" (N1, N2 : Number) return Boolean
is (for all F in Factors'Range => N1.Exponents (F) = N2.Exponents (F));
end Smooth_Numbers;
package body Smooth_Numbers is
One : constant Number := (Exponents => (others => 0), Log => 0.0);
Factors_Log : array (Factors'Range) of Log_Type;
function Image (N : Number) return String is
use GNATCOLL.GMP.Integers, GNATCOLL.GMP.Lib;
R, Tmp : Big_Integer;
begin
Set (R, "1");
for F in Factors'Range loop
Set (Tmp, Factors (F)'Image);
Raise_To_N (Tmp, GNATCOLL.GMP.Unsigned_Long (N.Exponents (F)));
Multiply (R, Tmp);
end loop;
return Image (R);
end Image;
function Compute (Nth : Positive) return Number is
Candidates : array (Factors'Range) of Number;
Values : array (1 .. Nth) of Number;
Indices : array (Factors'Range) of Natural :=
(others => Values'First);
Current : Number;
Tmp : Number;
begin
for F in Factors'Range loop
Factors_Log (F) := Funcs.Log (Log_Type (Factors (F)));
Candidates (F) := One;
Candidates (F).Exponents (F) := 1;
Candidates (F).Log := Factors_Log (F);
end loop;
Values (1) := One;
for Count in 2 .. Nth loop
Current := Candidates (Factors'First);
for F in Factors'First + 1 .. Factors'Last loop
if Candidates (F).Log < Current.Log then
Current := Candidates (F);
end if;
end loop;
Values (Count) := Current;
for F in Factors'Range loop
if Candidates (F) = Current then
Indices (F) := Indices (F) + 1;
Tmp := Values (Indices (F));
Tmp.Exponents (F) := Tmp.Exponents (F) + 1;
Tmp.Log := Tmp.Log + Factors_Log (F);
Candidates (F) := Tmp;
end if;
end loop;
end loop;
return Values (Nth);
end Compute;
end Smooth_Numbers;
package Hamming is new Smooth_Numbers ((2, 3, 5));
begin
for N in 1 .. 20 loop
Put (" " & Hamming.Image (Hamming.Compute (N)));
end loop;
New_Line;
Put_Line (Hamming.Image (Hamming.Compute (1691)));
Put_Line (Hamming.Image (Hamming.Compute (1_000_000)));
end Hamming;
| package main
import (
"fmt"
"math/big"
)
func min(a, b *big.Int) *big.Int {
if a.Cmp(b) < 0 {
return a
}
return b
}
func hamming(n int) []*big.Int {
h := make([]*big.Int, n)
h[0] = big.NewInt(1)
two, three, five := big.NewInt(2), big.NewInt(3), big.NewInt(5)
next2, next3, next5 := big.NewInt(2), big.NewInt(3), big.NewInt(5)
i, j, k := 0, 0, 0
for m := 1; m < len(h); m++ {
h[m] = new(big.Int).Set(min(next2, min(next3, next5)))
if h[m].Cmp(next2) == 0 { i++; next2.Mul( two, h[i]) }
if h[m].Cmp(next3) == 0 { j++; next3.Mul(three, h[j]) }
if h[m].Cmp(next5) == 0 { k++; next5.Mul( five, h[k]) }
}
return h
}
func main() {
h := hamming(1e6)
fmt.Println(h[:20])
fmt.Println(h[1691-1])
fmt.Println(h[len(h)-1])
}
|
Translate this program into Java but keep the logic exactly as in Ada. | with Ada.Numerics.Generic_Elementary_Functions;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.GMP.Integers;
with GNATCOLL.GMP.Lib;
procedure Hamming is
type Log_Type is new Long_Long_Float;
package Funcs is new Ada.Numerics.Generic_Elementary_Functions (Log_Type);
type Factors_Array is array (Positive range <>) of Positive;
generic
Factors : Factors_Array := (2, 3, 5);
package Smooth_Numbers is
type Number is private;
function Compute (Nth : Positive) return Number;
function Image (N : Number) return String;
private
type Exponent_Type is new Natural;
type Exponents_Array is array (Factors'Range) of Exponent_Type;
type Number is record
Exponents : Exponents_Array;
Log : Log_Type;
end record;
function "=" (N1, N2 : Number) return Boolean
is (for all F in Factors'Range => N1.Exponents (F) = N2.Exponents (F));
end Smooth_Numbers;
package body Smooth_Numbers is
One : constant Number := (Exponents => (others => 0), Log => 0.0);
Factors_Log : array (Factors'Range) of Log_Type;
function Image (N : Number) return String is
use GNATCOLL.GMP.Integers, GNATCOLL.GMP.Lib;
R, Tmp : Big_Integer;
begin
Set (R, "1");
for F in Factors'Range loop
Set (Tmp, Factors (F)'Image);
Raise_To_N (Tmp, GNATCOLL.GMP.Unsigned_Long (N.Exponents (F)));
Multiply (R, Tmp);
end loop;
return Image (R);
end Image;
function Compute (Nth : Positive) return Number is
Candidates : array (Factors'Range) of Number;
Values : array (1 .. Nth) of Number;
Indices : array (Factors'Range) of Natural :=
(others => Values'First);
Current : Number;
Tmp : Number;
begin
for F in Factors'Range loop
Factors_Log (F) := Funcs.Log (Log_Type (Factors (F)));
Candidates (F) := One;
Candidates (F).Exponents (F) := 1;
Candidates (F).Log := Factors_Log (F);
end loop;
Values (1) := One;
for Count in 2 .. Nth loop
Current := Candidates (Factors'First);
for F in Factors'First + 1 .. Factors'Last loop
if Candidates (F).Log < Current.Log then
Current := Candidates (F);
end if;
end loop;
Values (Count) := Current;
for F in Factors'Range loop
if Candidates (F) = Current then
Indices (F) := Indices (F) + 1;
Tmp := Values (Indices (F));
Tmp.Exponents (F) := Tmp.Exponents (F) + 1;
Tmp.Log := Tmp.Log + Factors_Log (F);
Candidates (F) := Tmp;
end if;
end loop;
end loop;
return Values (Nth);
end Compute;
end Smooth_Numbers;
package Hamming is new Smooth_Numbers ((2, 3, 5));
begin
for N in 1 .. 20 loop
Put (" " & Hamming.Image (Hamming.Compute (N)));
end loop;
New_Line;
Put_Line (Hamming.Image (Hamming.Compute (1691)));
Put_Line (Hamming.Image (Hamming.Compute (1_000_000)));
end Hamming;
| import java.math.BigInteger;
import java.util.PriorityQueue;
final class Hamming {
private static BigInteger THREE = BigInteger.valueOf(3);
private static BigInteger FIVE = BigInteger.valueOf(5);
private static void updateFrontier(BigInteger x,
PriorityQueue<BigInteger> pq) {
pq.offer(x.shiftLeft(1));
pq.offer(x.multiply(THREE));
pq.offer(x.multiply(FIVE));
}
public static BigInteger hamming(int n) {
if (n <= 0)
throw new IllegalArgumentException("Invalid parameter");
PriorityQueue<BigInteger> frontier = new PriorityQueue<BigInteger>();
updateFrontier(BigInteger.ONE, frontier);
BigInteger lowest = BigInteger.ONE;
for (int i = 1; i < n; i++) {
lowest = frontier.poll();
while (frontier.peek().equals(lowest))
frontier.poll();
updateFrontier(lowest, frontier);
}
return lowest;
}
public static void main(String[] args) {
System.out.print("Hamming(1 .. 20) =");
for (int i = 1; i < 21; i++)
System.out.print(" " + hamming(i));
System.out.println("\nHamming(1691) = " + hamming(1691));
System.out.println("Hamming(1000000) = " + hamming(1000000));
}
}
|
Transform the following Ada implementation into Python, maintaining the same output and logic. | with Ada.Numerics.Generic_Elementary_Functions;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.GMP.Integers;
with GNATCOLL.GMP.Lib;
procedure Hamming is
type Log_Type is new Long_Long_Float;
package Funcs is new Ada.Numerics.Generic_Elementary_Functions (Log_Type);
type Factors_Array is array (Positive range <>) of Positive;
generic
Factors : Factors_Array := (2, 3, 5);
package Smooth_Numbers is
type Number is private;
function Compute (Nth : Positive) return Number;
function Image (N : Number) return String;
private
type Exponent_Type is new Natural;
type Exponents_Array is array (Factors'Range) of Exponent_Type;
type Number is record
Exponents : Exponents_Array;
Log : Log_Type;
end record;
function "=" (N1, N2 : Number) return Boolean
is (for all F in Factors'Range => N1.Exponents (F) = N2.Exponents (F));
end Smooth_Numbers;
package body Smooth_Numbers is
One : constant Number := (Exponents => (others => 0), Log => 0.0);
Factors_Log : array (Factors'Range) of Log_Type;
function Image (N : Number) return String is
use GNATCOLL.GMP.Integers, GNATCOLL.GMP.Lib;
R, Tmp : Big_Integer;
begin
Set (R, "1");
for F in Factors'Range loop
Set (Tmp, Factors (F)'Image);
Raise_To_N (Tmp, GNATCOLL.GMP.Unsigned_Long (N.Exponents (F)));
Multiply (R, Tmp);
end loop;
return Image (R);
end Image;
function Compute (Nth : Positive) return Number is
Candidates : array (Factors'Range) of Number;
Values : array (1 .. Nth) of Number;
Indices : array (Factors'Range) of Natural :=
(others => Values'First);
Current : Number;
Tmp : Number;
begin
for F in Factors'Range loop
Factors_Log (F) := Funcs.Log (Log_Type (Factors (F)));
Candidates (F) := One;
Candidates (F).Exponents (F) := 1;
Candidates (F).Log := Factors_Log (F);
end loop;
Values (1) := One;
for Count in 2 .. Nth loop
Current := Candidates (Factors'First);
for F in Factors'First + 1 .. Factors'Last loop
if Candidates (F).Log < Current.Log then
Current := Candidates (F);
end if;
end loop;
Values (Count) := Current;
for F in Factors'Range loop
if Candidates (F) = Current then
Indices (F) := Indices (F) + 1;
Tmp := Values (Indices (F));
Tmp.Exponents (F) := Tmp.Exponents (F) + 1;
Tmp.Log := Tmp.Log + Factors_Log (F);
Candidates (F) := Tmp;
end if;
end loop;
end loop;
return Values (Nth);
end Compute;
end Smooth_Numbers;
package Hamming is new Smooth_Numbers ((2, 3, 5));
begin
for N in 1 .. 20 loop
Put (" " & Hamming.Image (Hamming.Compute (N)));
end loop;
New_Line;
Put_Line (Hamming.Image (Hamming.Compute (1691)));
Put_Line (Hamming.Image (Hamming.Compute (1_000_000)));
end Hamming;
| from itertools import islice
def hamming2():
h = 1
_h=[h]
multipliers = (2, 3, 5)
multindeces = [0 for i in multipliers]
multvalues = [x * _h[i] for x,i in zip(multipliers, multindeces)]
yield h
while True:
h = min(multvalues)
_h.append(h)
for (n,(v,x,i)) in enumerate(zip(multvalues, multipliers, multindeces)):
if v == h:
i += 1
multindeces[n] = i
multvalues[n] = x * _h[i]
mini = min(multindeces)
if mini >= 1000:
del _h[:mini]
multindeces = [i - mini for i in multindeces]
yield h
|
Convert the following code from Ada to VB, ensuring the logic remains intact. | with Ada.Numerics.Generic_Elementary_Functions;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.GMP.Integers;
with GNATCOLL.GMP.Lib;
procedure Hamming is
type Log_Type is new Long_Long_Float;
package Funcs is new Ada.Numerics.Generic_Elementary_Functions (Log_Type);
type Factors_Array is array (Positive range <>) of Positive;
generic
Factors : Factors_Array := (2, 3, 5);
package Smooth_Numbers is
type Number is private;
function Compute (Nth : Positive) return Number;
function Image (N : Number) return String;
private
type Exponent_Type is new Natural;
type Exponents_Array is array (Factors'Range) of Exponent_Type;
type Number is record
Exponents : Exponents_Array;
Log : Log_Type;
end record;
function "=" (N1, N2 : Number) return Boolean
is (for all F in Factors'Range => N1.Exponents (F) = N2.Exponents (F));
end Smooth_Numbers;
package body Smooth_Numbers is
One : constant Number := (Exponents => (others => 0), Log => 0.0);
Factors_Log : array (Factors'Range) of Log_Type;
function Image (N : Number) return String is
use GNATCOLL.GMP.Integers, GNATCOLL.GMP.Lib;
R, Tmp : Big_Integer;
begin
Set (R, "1");
for F in Factors'Range loop
Set (Tmp, Factors (F)'Image);
Raise_To_N (Tmp, GNATCOLL.GMP.Unsigned_Long (N.Exponents (F)));
Multiply (R, Tmp);
end loop;
return Image (R);
end Image;
function Compute (Nth : Positive) return Number is
Candidates : array (Factors'Range) of Number;
Values : array (1 .. Nth) of Number;
Indices : array (Factors'Range) of Natural :=
(others => Values'First);
Current : Number;
Tmp : Number;
begin
for F in Factors'Range loop
Factors_Log (F) := Funcs.Log (Log_Type (Factors (F)));
Candidates (F) := One;
Candidates (F).Exponents (F) := 1;
Candidates (F).Log := Factors_Log (F);
end loop;
Values (1) := One;
for Count in 2 .. Nth loop
Current := Candidates (Factors'First);
for F in Factors'First + 1 .. Factors'Last loop
if Candidates (F).Log < Current.Log then
Current := Candidates (F);
end if;
end loop;
Values (Count) := Current;
for F in Factors'Range loop
if Candidates (F) = Current then
Indices (F) := Indices (F) + 1;
Tmp := Values (Indices (F));
Tmp.Exponents (F) := Tmp.Exponents (F) + 1;
Tmp.Log := Tmp.Log + Factors_Log (F);
Candidates (F) := Tmp;
end if;
end loop;
end loop;
return Values (Nth);
end Compute;
end Smooth_Numbers;
package Hamming is new Smooth_Numbers ((2, 3, 5));
begin
for N in 1 .. 20 loop
Put (" " & Hamming.Image (Hamming.Compute (N)));
end loop;
New_Line;
Put_Line (Hamming.Image (Hamming.Compute (1691)));
Put_Line (Hamming.Image (Hamming.Compute (1_000_000)));
end Hamming;
|
Public a As Double, b As Double, c As Double, d As Double
Public p As Double, q As Double, r As Double
Public cnt() As Integer
Public hn(2) As Integer
Public Declare Function GetTickCount Lib "kernel32.dll" () As Long
Private Function log10(x As Double) As Double
log10 = WorksheetFunction.log10(x)
End Function
Private Function pow(x As Variant, y As Variant) As Double
pow = WorksheetFunction.Power(x, y)
End Function
Private Sub init(N As Long)
Dim k As Double
k = log10(2) * log10(3) * log10(5) * 6 * N
k = pow(k, 1 / 3)
a = k / log10(2)
b = k / log10(3)
c = k / log10(5)
p = -b * c
q = -a * c
r = -a * b
End Sub
Private Function x_given_y_z(y As Integer, z As Integer) As Double
x_given_y_z = -(q * y + r * z + a * b * c) / p
End Function
Private Function cmp(i As Integer, j As Integer, k As Integer, gn() As Integer) As Boolean
cmp = (i * log10(2) + j * log10(3) + k * log10(5)) > (gn(0) * log10(2) + gn(1) * log10(3) + gn(2) * log10(5))
End Function
Private Function count(N As Long, step As Integer) As Long
Dim M As Long, j As Integer, k As Integer
If step = 2 Then ReDim cnt(0 To Int(b) + 1, 0 To Int(c) + 1)
M = 0: j = 0: k = 0
Do While -c * j - b * k + b * c > 0
Do While -c * j - b * k + b * c > 0
Select Case step
Case 1: M = M + Int(x_given_y_z(j, k))
Case 2
cnt(j, k) = Int(x_given_y_z(j, k))
Case 3
If Int(x_given_y_z(j, k)) < cnt(j, k) Then
If cmp(cnt(j, k), j, k, hn) Then
hn(0) = cnt(j, k)
hn(1) = j
hn(2) = k
End If
End If
End Select
k = k + 1
Loop
k = 0
j = j + 1
Loop
count = M
End Function
Private Sub list_upto(ByVal N As Integer)
Dim count As Integer
count = 1
Dim hn As Integer
hn = 1
Do While count < N
k = hn
Do While k Mod 2 = 0
k = k / 2
Loop
Do While k Mod 3 = 0
k = k / 3
Loop
Do While k Mod 5 = 0
k = k / 5
Loop
If k = 1 Then
Debug.Print hn; " ";
count = count + 1
End If
hn = hn + 1
Loop
Debug.Print
End Sub
Private Function find_seed(N As Long, step As Integer) As Long
Dim initial As Long, total As Long
initial = N
Do
init initial
total = count(initial, step)
initial = initial + N - total
Loop Until total = N
find_seed = initial
End Function
Private Sub find_hn(N As Long)
Dim fs As Long, err As Long
fs = find_seed(N, 1)
init fs
err = count(fs, 2)
init fs - 1
err = count(fs - 1, 3)
Debug.Print "2^" & hn(0) - 1; " * 3^" & hn(1); " * 5^" & hn(2); "=";
If N < 1692 Then
Debug.Print pow(2, hn(0) - 1) * pow(3, hn(1)) * pow(5, hn(2))
Else
Debug.Print
If N <= 1000000 Then
If hn(0) - 1 < hn(2) Then
Debug.Print CDec(pow(3, hn(1))) * CDec(pow(5, hn(2) - hn(0) + 1)) & String$(hn(0) - 1, "0")
Else
Debug.Print CDec(pow(2, hn(0) - 1 - hn(2))) * CDec(pow(3, hn(1))) & String$(hn(2), "0")
End If
End If
End If
End Sub
Public Sub main()
Dim start_time As Long, finis_time As Long
start_time = GetTickCount
Debug.Print "The first twenty Hamming numbers are:"
list_upto 20
Debug.Print "Hamming number 1691 is: ";
find_hn 1691
Debug.Print "Hamming number 1000000 is: ";
find_hn 1000000
finis_time = GetTickCount
Debug.Print "Execution time"; (finis_time - start_time); " milliseconds"
End Sub
|
Rewrite the snippet below in C so it works the same as the original Arturo code. | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
x3: 3 * h\[j]
]
if x5 = h\[n] [
k: k + 1
x5: 5 * h\[k]
]
]
last h
]
print map 1..20 => hamming
print hamming 1691
print hamming 1000000
| #include <stdio.h>
#include <stdlib.h>
typedef unsigned long long ham;
size_t alloc = 0, n = 1;
ham *q = 0;
void qpush(ham h)
{
int i, j;
if (alloc <= n) {
alloc = alloc ? alloc * 2 : 16;
q = realloc(q, sizeof(ham) * alloc);
}
for (i = n++; (j = i/2) && q[j] > h; q[i] = q[j], i = j);
q[i] = h;
}
ham qpop()
{
int i, j;
ham r, t;
for (r = q[1]; n > 1 && r == q[1]; q[i] = t) {
for (i = 1, t = q[--n]; (j = i * 2) < n;) {
if (j + 1 < n && q[j] > q[j+1]) j++;
if (t <= q[j]) break;
q[i] = q[j], i = j;
}
}
return r;
}
int main()
{
int i;
ham h;
for (qpush(i = 1); i <= 1691; i++) {
h = qpop();
qpush(h * 2);
qpush(h * 3);
qpush(h * 5);
if (i <= 20 || i == 1691)
printf("%6d: %llu\n", i, h);
}
return 0;
}
|
Change the following Arturo code into C# without altering its purpose. | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
x3: 3 * h\[j]
]
if x5 = h\[n] [
k: k + 1
x5: 5 * h\[k]
]
]
last h
]
print map 1..20 => hamming
print hamming 1691
print hamming 1000000
| using System;
using System.Numerics;
using System.Linq;
namespace Hamming {
class MainClass {
public static BigInteger Hamming(int n) {
BigInteger two = 2, three = 3, five = 5;
var h = new BigInteger[n];
h[0] = 1;
BigInteger x2 = 2, x3 = 3, x5 = 5;
int i = 0, j = 0, k = 0;
for (int index = 1; index < n; index++) {
h[index] = BigInteger.Min(x2, BigInteger.Min(x3, x5));
if (h[index] == x2) x2 = two * h[++i];
if (h[index] == x3) x3 = three * h[++j];
if (h[index] == x5) x5 = five * h[++k];
}
return h[n - 1];
}
public static void Main(string[] args) {
Console.WriteLine(string.Join(" ", Enumerable.Range(1, 20).ToList().Select(x => Hamming(x))));
Console.WriteLine(Hamming(1691));
Console.WriteLine(Hamming(1000000));
}
}
}
|
Convert this Arturo block to C++, preserving its control flow and logic. | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
x3: 3 * h\[j]
]
if x5 = h\[n] [
k: k + 1
x5: 5 * h\[k]
]
]
last h
]
print map 1..20 => hamming
print hamming 1691
print hamming 1000000
| #include <iostream>
#include <vector>
class Ham {
private:
std::vector<unsigned int> _H, _hp, _hv, _x;
public:
bool operator!=(const Ham& other) const {return true;}
Ham begin() const {return *this;}
Ham end() const {return *this;}
unsigned int operator*() const {return _x.back();}
Ham(const std::vector<unsigned int> &pfs):_H(pfs),_hp(pfs.size(),0),_hv({pfs}),_x({1}){}
const Ham& operator++() {
for (int i=0; i<_H.size(); i++) for (;_hv[i]<=_x.back();_hv[i]=_x[++_hp[i]]*_H[i]);
_x.push_back(_hv[0]);
for (int i=1; i<_H.size(); i++) if (_hv[i]<_x.back()) _x.back()=_hv[i];
return *this;
}
};
|
Keep all operations the same but rewrite the snippet in Java. | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
x3: 3 * h\[j]
]
if x5 = h\[n] [
k: k + 1
x5: 5 * h\[k]
]
]
last h
]
print map 1..20 => hamming
print hamming 1691
print hamming 1000000
| import java.math.BigInteger;
import java.util.PriorityQueue;
final class Hamming {
private static BigInteger THREE = BigInteger.valueOf(3);
private static BigInteger FIVE = BigInteger.valueOf(5);
private static void updateFrontier(BigInteger x,
PriorityQueue<BigInteger> pq) {
pq.offer(x.shiftLeft(1));
pq.offer(x.multiply(THREE));
pq.offer(x.multiply(FIVE));
}
public static BigInteger hamming(int n) {
if (n <= 0)
throw new IllegalArgumentException("Invalid parameter");
PriorityQueue<BigInteger> frontier = new PriorityQueue<BigInteger>();
updateFrontier(BigInteger.ONE, frontier);
BigInteger lowest = BigInteger.ONE;
for (int i = 1; i < n; i++) {
lowest = frontier.poll();
while (frontier.peek().equals(lowest))
frontier.poll();
updateFrontier(lowest, frontier);
}
return lowest;
}
public static void main(String[] args) {
System.out.print("Hamming(1 .. 20) =");
for (int i = 1; i < 21; i++)
System.out.print(" " + hamming(i));
System.out.println("\nHamming(1691) = " + hamming(1691));
System.out.println("Hamming(1000000) = " + hamming(1000000));
}
}
|
Ensure the translated Python code behaves exactly like the original Arturo snippet. | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
x3: 3 * h\[j]
]
if x5 = h\[n] [
k: k + 1
x5: 5 * h\[k]
]
]
last h
]
print map 1..20 => hamming
print hamming 1691
print hamming 1000000
| from itertools import islice
def hamming2():
h = 1
_h=[h]
multipliers = (2, 3, 5)
multindeces = [0 for i in multipliers]
multvalues = [x * _h[i] for x,i in zip(multipliers, multindeces)]
yield h
while True:
h = min(multvalues)
_h.append(h)
for (n,(v,x,i)) in enumerate(zip(multvalues, multipliers, multindeces)):
if v == h:
i += 1
multindeces[n] = i
multvalues[n] = x * _h[i]
mini = min(multindeces)
if mini >= 1000:
del _h[:mini]
multindeces = [i - mini for i in multindeces]
yield h
|
Ensure the translated VB code behaves exactly like the original Arturo snippet. | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
x3: 3 * h\[j]
]
if x5 = h\[n] [
k: k + 1
x5: 5 * h\[k]
]
]
last h
]
print map 1..20 => hamming
print hamming 1691
print hamming 1000000
|
Public a As Double, b As Double, c As Double, d As Double
Public p As Double, q As Double, r As Double
Public cnt() As Integer
Public hn(2) As Integer
Public Declare Function GetTickCount Lib "kernel32.dll" () As Long
Private Function log10(x As Double) As Double
log10 = WorksheetFunction.log10(x)
End Function
Private Function pow(x As Variant, y As Variant) As Double
pow = WorksheetFunction.Power(x, y)
End Function
Private Sub init(N As Long)
Dim k As Double
k = log10(2) * log10(3) * log10(5) * 6 * N
k = pow(k, 1 / 3)
a = k / log10(2)
b = k / log10(3)
c = k / log10(5)
p = -b * c
q = -a * c
r = -a * b
End Sub
Private Function x_given_y_z(y As Integer, z As Integer) As Double
x_given_y_z = -(q * y + r * z + a * b * c) / p
End Function
Private Function cmp(i As Integer, j As Integer, k As Integer, gn() As Integer) As Boolean
cmp = (i * log10(2) + j * log10(3) + k * log10(5)) > (gn(0) * log10(2) + gn(1) * log10(3) + gn(2) * log10(5))
End Function
Private Function count(N As Long, step As Integer) As Long
Dim M As Long, j As Integer, k As Integer
If step = 2 Then ReDim cnt(0 To Int(b) + 1, 0 To Int(c) + 1)
M = 0: j = 0: k = 0
Do While -c * j - b * k + b * c > 0
Do While -c * j - b * k + b * c > 0
Select Case step
Case 1: M = M + Int(x_given_y_z(j, k))
Case 2
cnt(j, k) = Int(x_given_y_z(j, k))
Case 3
If Int(x_given_y_z(j, k)) < cnt(j, k) Then
If cmp(cnt(j, k), j, k, hn) Then
hn(0) = cnt(j, k)
hn(1) = j
hn(2) = k
End If
End If
End Select
k = k + 1
Loop
k = 0
j = j + 1
Loop
count = M
End Function
Private Sub list_upto(ByVal N As Integer)
Dim count As Integer
count = 1
Dim hn As Integer
hn = 1
Do While count < N
k = hn
Do While k Mod 2 = 0
k = k / 2
Loop
Do While k Mod 3 = 0
k = k / 3
Loop
Do While k Mod 5 = 0
k = k / 5
Loop
If k = 1 Then
Debug.Print hn; " ";
count = count + 1
End If
hn = hn + 1
Loop
Debug.Print
End Sub
Private Function find_seed(N As Long, step As Integer) As Long
Dim initial As Long, total As Long
initial = N
Do
init initial
total = count(initial, step)
initial = initial + N - total
Loop Until total = N
find_seed = initial
End Function
Private Sub find_hn(N As Long)
Dim fs As Long, err As Long
fs = find_seed(N, 1)
init fs
err = count(fs, 2)
init fs - 1
err = count(fs - 1, 3)
Debug.Print "2^" & hn(0) - 1; " * 3^" & hn(1); " * 5^" & hn(2); "=";
If N < 1692 Then
Debug.Print pow(2, hn(0) - 1) * pow(3, hn(1)) * pow(5, hn(2))
Else
Debug.Print
If N <= 1000000 Then
If hn(0) - 1 < hn(2) Then
Debug.Print CDec(pow(3, hn(1))) * CDec(pow(5, hn(2) - hn(0) + 1)) & String$(hn(0) - 1, "0")
Else
Debug.Print CDec(pow(2, hn(0) - 1 - hn(2))) * CDec(pow(3, hn(1))) & String$(hn(2), "0")
End If
End If
End If
End Sub
Public Sub main()
Dim start_time As Long, finis_time As Long
start_time = GetTickCount
Debug.Print "The first twenty Hamming numbers are:"
list_upto 20
Debug.Print "Hamming number 1691 is: ";
find_hn 1691
Debug.Print "Hamming number 1000000 is: ";
find_hn 1000000
finis_time = GetTickCount
Debug.Print "Execution time"; (finis_time - start_time); " milliseconds"
End Sub
|
Generate an equivalent Go version of this Arturo code. | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
x3: 3 * h\[j]
]
if x5 = h\[n] [
k: k + 1
x5: 5 * h\[k]
]
]
last h
]
print map 1..20 => hamming
print hamming 1691
print hamming 1000000
| package main
import (
"fmt"
"math/big"
)
func min(a, b *big.Int) *big.Int {
if a.Cmp(b) < 0 {
return a
}
return b
}
func hamming(n int) []*big.Int {
h := make([]*big.Int, n)
h[0] = big.NewInt(1)
two, three, five := big.NewInt(2), big.NewInt(3), big.NewInt(5)
next2, next3, next5 := big.NewInt(2), big.NewInt(3), big.NewInt(5)
i, j, k := 0, 0, 0
for m := 1; m < len(h); m++ {
h[m] = new(big.Int).Set(min(next2, min(next3, next5)))
if h[m].Cmp(next2) == 0 { i++; next2.Mul( two, h[i]) }
if h[m].Cmp(next3) == 0 { j++; next3.Mul(three, h[j]) }
if h[m].Cmp(next5) == 0 { k++; next5.Mul( five, h[k]) }
}
return h
}
func main() {
h := hamming(1e6)
fmt.Println(h[:20])
fmt.Println(h[1691-1])
fmt.Println(h[len(h)-1])
}
|
Transform the following AutoHotKey implementation into C, maintaining the same output and logic. | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5**k)
if (H > 0)
ans = %H%`n%ans%
i++
if (i > num1)
{
i=0
j++
if (j > num2)
{
j=0
k++
}
}
if (k > num3)
break
}
Sort ans, N
Loop, parse, ans, `n, `r
{
if (A_index > last)
break
if (A_index < first)
continue
Output = %Output%`n%A_LoopField%
}
return Output
}
| #include <stdio.h>
#include <stdlib.h>
typedef unsigned long long ham;
size_t alloc = 0, n = 1;
ham *q = 0;
void qpush(ham h)
{
int i, j;
if (alloc <= n) {
alloc = alloc ? alloc * 2 : 16;
q = realloc(q, sizeof(ham) * alloc);
}
for (i = n++; (j = i/2) && q[j] > h; q[i] = q[j], i = j);
q[i] = h;
}
ham qpop()
{
int i, j;
ham r, t;
for (r = q[1]; n > 1 && r == q[1]; q[i] = t) {
for (i = 1, t = q[--n]; (j = i * 2) < n;) {
if (j + 1 < n && q[j] > q[j+1]) j++;
if (t <= q[j]) break;
q[i] = q[j], i = j;
}
}
return r;
}
int main()
{
int i;
ham h;
for (qpush(i = 1); i <= 1691; i++) {
h = qpop();
qpush(h * 2);
qpush(h * 3);
qpush(h * 5);
if (i <= 20 || i == 1691)
printf("%6d: %llu\n", i, h);
}
return 0;
}
|
Produce a language-to-language conversion: from AutoHotKey to C#, same semantics. | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5**k)
if (H > 0)
ans = %H%`n%ans%
i++
if (i > num1)
{
i=0
j++
if (j > num2)
{
j=0
k++
}
}
if (k > num3)
break
}
Sort ans, N
Loop, parse, ans, `n, `r
{
if (A_index > last)
break
if (A_index < first)
continue
Output = %Output%`n%A_LoopField%
}
return Output
}
| using System;
using System.Numerics;
using System.Linq;
namespace Hamming {
class MainClass {
public static BigInteger Hamming(int n) {
BigInteger two = 2, three = 3, five = 5;
var h = new BigInteger[n];
h[0] = 1;
BigInteger x2 = 2, x3 = 3, x5 = 5;
int i = 0, j = 0, k = 0;
for (int index = 1; index < n; index++) {
h[index] = BigInteger.Min(x2, BigInteger.Min(x3, x5));
if (h[index] == x2) x2 = two * h[++i];
if (h[index] == x3) x3 = three * h[++j];
if (h[index] == x5) x5 = five * h[++k];
}
return h[n - 1];
}
public static void Main(string[] args) {
Console.WriteLine(string.Join(" ", Enumerable.Range(1, 20).ToList().Select(x => Hamming(x))));
Console.WriteLine(Hamming(1691));
Console.WriteLine(Hamming(1000000));
}
}
}
|
Keep all operations the same but rewrite the snippet in C++. | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5**k)
if (H > 0)
ans = %H%`n%ans%
i++
if (i > num1)
{
i=0
j++
if (j > num2)
{
j=0
k++
}
}
if (k > num3)
break
}
Sort ans, N
Loop, parse, ans, `n, `r
{
if (A_index > last)
break
if (A_index < first)
continue
Output = %Output%`n%A_LoopField%
}
return Output
}
| #include <iostream>
#include <vector>
class Ham {
private:
std::vector<unsigned int> _H, _hp, _hv, _x;
public:
bool operator!=(const Ham& other) const {return true;}
Ham begin() const {return *this;}
Ham end() const {return *this;}
unsigned int operator*() const {return _x.back();}
Ham(const std::vector<unsigned int> &pfs):_H(pfs),_hp(pfs.size(),0),_hv({pfs}),_x({1}){}
const Ham& operator++() {
for (int i=0; i<_H.size(); i++) for (;_hv[i]<=_x.back();_hv[i]=_x[++_hp[i]]*_H[i]);
_x.push_back(_hv[0]);
for (int i=1; i<_H.size(); i++) if (_hv[i]<_x.back()) _x.back()=_hv[i];
return *this;
}
};
|
Rewrite the snippet below in Java so it works the same as the original AutoHotKey code. | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5**k)
if (H > 0)
ans = %H%`n%ans%
i++
if (i > num1)
{
i=0
j++
if (j > num2)
{
j=0
k++
}
}
if (k > num3)
break
}
Sort ans, N
Loop, parse, ans, `n, `r
{
if (A_index > last)
break
if (A_index < first)
continue
Output = %Output%`n%A_LoopField%
}
return Output
}
| import java.math.BigInteger;
import java.util.PriorityQueue;
final class Hamming {
private static BigInteger THREE = BigInteger.valueOf(3);
private static BigInteger FIVE = BigInteger.valueOf(5);
private static void updateFrontier(BigInteger x,
PriorityQueue<BigInteger> pq) {
pq.offer(x.shiftLeft(1));
pq.offer(x.multiply(THREE));
pq.offer(x.multiply(FIVE));
}
public static BigInteger hamming(int n) {
if (n <= 0)
throw new IllegalArgumentException("Invalid parameter");
PriorityQueue<BigInteger> frontier = new PriorityQueue<BigInteger>();
updateFrontier(BigInteger.ONE, frontier);
BigInteger lowest = BigInteger.ONE;
for (int i = 1; i < n; i++) {
lowest = frontier.poll();
while (frontier.peek().equals(lowest))
frontier.poll();
updateFrontier(lowest, frontier);
}
return lowest;
}
public static void main(String[] args) {
System.out.print("Hamming(1 .. 20) =");
for (int i = 1; i < 21; i++)
System.out.print(" " + hamming(i));
System.out.println("\nHamming(1691) = " + hamming(1691));
System.out.println("Hamming(1000000) = " + hamming(1000000));
}
}
|
Convert this AutoHotKey block to Python, preserving its control flow and logic. | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5**k)
if (H > 0)
ans = %H%`n%ans%
i++
if (i > num1)
{
i=0
j++
if (j > num2)
{
j=0
k++
}
}
if (k > num3)
break
}
Sort ans, N
Loop, parse, ans, `n, `r
{
if (A_index > last)
break
if (A_index < first)
continue
Output = %Output%`n%A_LoopField%
}
return Output
}
| from itertools import islice
def hamming2():
h = 1
_h=[h]
multipliers = (2, 3, 5)
multindeces = [0 for i in multipliers]
multvalues = [x * _h[i] for x,i in zip(multipliers, multindeces)]
yield h
while True:
h = min(multvalues)
_h.append(h)
for (n,(v,x,i)) in enumerate(zip(multvalues, multipliers, multindeces)):
if v == h:
i += 1
multindeces[n] = i
multvalues[n] = x * _h[i]
mini = min(multindeces)
if mini >= 1000:
del _h[:mini]
multindeces = [i - mini for i in multindeces]
yield h
|
Write a version of this AutoHotKey function in VB with identical behavior. | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5**k)
if (H > 0)
ans = %H%`n%ans%
i++
if (i > num1)
{
i=0
j++
if (j > num2)
{
j=0
k++
}
}
if (k > num3)
break
}
Sort ans, N
Loop, parse, ans, `n, `r
{
if (A_index > last)
break
if (A_index < first)
continue
Output = %Output%`n%A_LoopField%
}
return Output
}
|
Public a As Double, b As Double, c As Double, d As Double
Public p As Double, q As Double, r As Double
Public cnt() As Integer
Public hn(2) As Integer
Public Declare Function GetTickCount Lib "kernel32.dll" () As Long
Private Function log10(x As Double) As Double
log10 = WorksheetFunction.log10(x)
End Function
Private Function pow(x As Variant, y As Variant) As Double
pow = WorksheetFunction.Power(x, y)
End Function
Private Sub init(N As Long)
Dim k As Double
k = log10(2) * log10(3) * log10(5) * 6 * N
k = pow(k, 1 / 3)
a = k / log10(2)
b = k / log10(3)
c = k / log10(5)
p = -b * c
q = -a * c
r = -a * b
End Sub
Private Function x_given_y_z(y As Integer, z As Integer) As Double
x_given_y_z = -(q * y + r * z + a * b * c) / p
End Function
Private Function cmp(i As Integer, j As Integer, k As Integer, gn() As Integer) As Boolean
cmp = (i * log10(2) + j * log10(3) + k * log10(5)) > (gn(0) * log10(2) + gn(1) * log10(3) + gn(2) * log10(5))
End Function
Private Function count(N As Long, step As Integer) As Long
Dim M As Long, j As Integer, k As Integer
If step = 2 Then ReDim cnt(0 To Int(b) + 1, 0 To Int(c) + 1)
M = 0: j = 0: k = 0
Do While -c * j - b * k + b * c > 0
Do While -c * j - b * k + b * c > 0
Select Case step
Case 1: M = M + Int(x_given_y_z(j, k))
Case 2
cnt(j, k) = Int(x_given_y_z(j, k))
Case 3
If Int(x_given_y_z(j, k)) < cnt(j, k) Then
If cmp(cnt(j, k), j, k, hn) Then
hn(0) = cnt(j, k)
hn(1) = j
hn(2) = k
End If
End If
End Select
k = k + 1
Loop
k = 0
j = j + 1
Loop
count = M
End Function
Private Sub list_upto(ByVal N As Integer)
Dim count As Integer
count = 1
Dim hn As Integer
hn = 1
Do While count < N
k = hn
Do While k Mod 2 = 0
k = k / 2
Loop
Do While k Mod 3 = 0
k = k / 3
Loop
Do While k Mod 5 = 0
k = k / 5
Loop
If k = 1 Then
Debug.Print hn; " ";
count = count + 1
End If
hn = hn + 1
Loop
Debug.Print
End Sub
Private Function find_seed(N As Long, step As Integer) As Long
Dim initial As Long, total As Long
initial = N
Do
init initial
total = count(initial, step)
initial = initial + N - total
Loop Until total = N
find_seed = initial
End Function
Private Sub find_hn(N As Long)
Dim fs As Long, err As Long
fs = find_seed(N, 1)
init fs
err = count(fs, 2)
init fs - 1
err = count(fs - 1, 3)
Debug.Print "2^" & hn(0) - 1; " * 3^" & hn(1); " * 5^" & hn(2); "=";
If N < 1692 Then
Debug.Print pow(2, hn(0) - 1) * pow(3, hn(1)) * pow(5, hn(2))
Else
Debug.Print
If N <= 1000000 Then
If hn(0) - 1 < hn(2) Then
Debug.Print CDec(pow(3, hn(1))) * CDec(pow(5, hn(2) - hn(0) + 1)) & String$(hn(0) - 1, "0")
Else
Debug.Print CDec(pow(2, hn(0) - 1 - hn(2))) * CDec(pow(3, hn(1))) & String$(hn(2), "0")
End If
End If
End If
End Sub
Public Sub main()
Dim start_time As Long, finis_time As Long
start_time = GetTickCount
Debug.Print "The first twenty Hamming numbers are:"
list_upto 20
Debug.Print "Hamming number 1691 is: ";
find_hn 1691
Debug.Print "Hamming number 1000000 is: ";
find_hn 1000000
finis_time = GetTickCount
Debug.Print "Execution time"; (finis_time - start_time); " milliseconds"
End Sub
|
Write the same algorithm in Go as shown in this AutoHotKey implementation. | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5**k)
if (H > 0)
ans = %H%`n%ans%
i++
if (i > num1)
{
i=0
j++
if (j > num2)
{
j=0
k++
}
}
if (k > num3)
break
}
Sort ans, N
Loop, parse, ans, `n, `r
{
if (A_index > last)
break
if (A_index < first)
continue
Output = %Output%`n%A_LoopField%
}
return Output
}
| package main
import (
"fmt"
"math/big"
)
func min(a, b *big.Int) *big.Int {
if a.Cmp(b) < 0 {
return a
}
return b
}
func hamming(n int) []*big.Int {
h := make([]*big.Int, n)
h[0] = big.NewInt(1)
two, three, five := big.NewInt(2), big.NewInt(3), big.NewInt(5)
next2, next3, next5 := big.NewInt(2), big.NewInt(3), big.NewInt(5)
i, j, k := 0, 0, 0
for m := 1; m < len(h); m++ {
h[m] = new(big.Int).Set(min(next2, min(next3, next5)))
if h[m].Cmp(next2) == 0 { i++; next2.Mul( two, h[i]) }
if h[m].Cmp(next3) == 0 { j++; next3.Mul(three, h[j]) }
if h[m].Cmp(next5) == 0 { k++; next5.Mul( five, h[k]) }
}
return h
}
func main() {
h := hamming(1e6)
fmt.Println(h[:20])
fmt.Println(h[1691-1])
fmt.Println(h[len(h)-1])
}
|
Convert this AWK snippet to C and keep its semantics consistent. |
BEGIN {
for (i=1; i<=20; i++) {
printf("%d ",hamming(i))
}
printf("\n1691: %d\n",hamming(1691))
printf("\n1000000: %d\n",hamming(1000000))
exit(0)
}
function hamming(limit, h,i,j,k,n,x2,x3,x5) {
h[0] = 1
x2 = 2
x3 = 3
x5 = 5
for (n=1; n<=limit; n++) {
h[n] = min(x2,min(x3,x5))
if (h[n] == x2) { x2 = 2 * h[++i] }
if (h[n] == x3) { x3 = 3 * h[++j] }
if (h[n] == x5) { x5 = 5 * h[++k] }
}
return(h[limit-1])
}
function min(x,y) {
return((x < y) ? x : y)
}
| #include <stdio.h>
#include <stdlib.h>
typedef unsigned long long ham;
size_t alloc = 0, n = 1;
ham *q = 0;
void qpush(ham h)
{
int i, j;
if (alloc <= n) {
alloc = alloc ? alloc * 2 : 16;
q = realloc(q, sizeof(ham) * alloc);
}
for (i = n++; (j = i/2) && q[j] > h; q[i] = q[j], i = j);
q[i] = h;
}
ham qpop()
{
int i, j;
ham r, t;
for (r = q[1]; n > 1 && r == q[1]; q[i] = t) {
for (i = 1, t = q[--n]; (j = i * 2) < n;) {
if (j + 1 < n && q[j] > q[j+1]) j++;
if (t <= q[j]) break;
q[i] = q[j], i = j;
}
}
return r;
}
int main()
{
int i;
ham h;
for (qpush(i = 1); i <= 1691; i++) {
h = qpop();
qpush(h * 2);
qpush(h * 3);
qpush(h * 5);
if (i <= 20 || i == 1691)
printf("%6d: %llu\n", i, h);
}
return 0;
}
|
Keep all operations the same but rewrite the snippet in C#. |
BEGIN {
for (i=1; i<=20; i++) {
printf("%d ",hamming(i))
}
printf("\n1691: %d\n",hamming(1691))
printf("\n1000000: %d\n",hamming(1000000))
exit(0)
}
function hamming(limit, h,i,j,k,n,x2,x3,x5) {
h[0] = 1
x2 = 2
x3 = 3
x5 = 5
for (n=1; n<=limit; n++) {
h[n] = min(x2,min(x3,x5))
if (h[n] == x2) { x2 = 2 * h[++i] }
if (h[n] == x3) { x3 = 3 * h[++j] }
if (h[n] == x5) { x5 = 5 * h[++k] }
}
return(h[limit-1])
}
function min(x,y) {
return((x < y) ? x : y)
}
| using System;
using System.Numerics;
using System.Linq;
namespace Hamming {
class MainClass {
public static BigInteger Hamming(int n) {
BigInteger two = 2, three = 3, five = 5;
var h = new BigInteger[n];
h[0] = 1;
BigInteger x2 = 2, x3 = 3, x5 = 5;
int i = 0, j = 0, k = 0;
for (int index = 1; index < n; index++) {
h[index] = BigInteger.Min(x2, BigInteger.Min(x3, x5));
if (h[index] == x2) x2 = two * h[++i];
if (h[index] == x3) x3 = three * h[++j];
if (h[index] == x5) x5 = five * h[++k];
}
return h[n - 1];
}
public static void Main(string[] args) {
Console.WriteLine(string.Join(" ", Enumerable.Range(1, 20).ToList().Select(x => Hamming(x))));
Console.WriteLine(Hamming(1691));
Console.WriteLine(Hamming(1000000));
}
}
}
|
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