task_url stringlengths 30 116 | task_name stringlengths 2 86 | task_description stringlengths 0 14.4k | language_url stringlengths 2 53 | language_name stringlengths 1 52 | code stringlengths 0 61.9k |
|---|---|---|---|---|---|
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Crystal | Crystal | require "time"
time = Time.local
puts time.to_s("%Y-%m-%d")
puts time.to_s("%A, %B %d, %Y")
|
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #D | D | module datetimedemo ;
import tango.time.Time ;
import tango.text.locale.Locale ;
import tango.time.chrono.Gregorian ;
import tango.io.Stdout ;
void main() {
Gregorian g = new Gregorian ;
Stdout.layout = new Locale; // enable Stdout to handle date/time format
Time d = g.toTime(2007, 11, 10, 0, 0, 0, 0... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #Arturo | Arturo | ; data.csv
;
; C1,C2,C3,C4,C5
; 1,5,9,13,17
; 2,6,10,14,18
; 3,7,11,15,19
; 4,8,12,16,20
table: read.csv "data.csv"
data: []
loop table 'row [
addable: ["SUM"]
if row <> first table ->
addable: @[to :string sum map row 'x [to :integer x]]
'data ++ @[row ++ addable]
]
loop data 'row [
loop... |
http://rosettacode.org/wiki/Damm_algorithm | Damm algorithm | The Damm algorithm is a checksum algorithm which detects all single digit errors and adjacent transposition errors.
The algorithm is named after H. Michael Damm.
Task
Verify the checksum, stored as last digit of an input.
| #FreeBASIC | FreeBASIC | ' version 04-07-2018
' compile with: fbc -s console
Function Damm(digit_str As String) As UInteger
Dim As UInteger table(10,10) => { { 0, 3, 1, 7, 5, 9, 8, 6, 4, 2 } , _
{ 7, 0, 9, 2, 1, 5, 4, 8, 6, 3 } , { 4, 2, 0, 6, 8, 7, 1, 3, 5, 9 } , _
{ 1, 7, 5, 0, 9, 8, 3, 4, 2, 6 } , { 6, 1, 2, 3, 0, 4, 5, 9, 7, ... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Action.21 | Action! | PROC Save(CHAR ARRAY text)
BYTE dev=[1]
Close(dev)
Open(dev,"C:",8,128)
PrintE("Saving started...")
PrintF("Saving text: ""%S""%E",text)
PrintD(dev,text)
Close(dev)
PrintE("Saving finished.")
RETURN
PROC Load()
CHAR ARRAY result(255)
BYTE dev=[1]
Close(dev)
Open(dev,"C:",4,128)
PrintE("L... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Applesoft_BASIC | Applesoft BASIC | SAVE |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Arturo | Arturo | write "TAPE.FILE" {
This code
should be able to write
a file
to magnetic tape
} |
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #F.23 | F# | open System
let hamburgers = 4000000000000000M
let hamburgerPrice = 5.50M
let milkshakes = 2M
let milkshakePrice = 2.86M
let taxRate = 0.0765M
let total = hamburgers * hamburgerPrice + milkshakes * milkshakePrice
let tax = total * taxRate
let totalWithTax = total + tax
printfn "Total before tax:\t$%M" <| Math.Rou... |
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #Factor | Factor | USING: combinators.smart io kernel math math.functions money ;
10 15 ^ 4 * 5+50/100 * ! hamburger subtotal
2 2+86/100 * ! milkshake subtotal
+ ! subtotal
dup DECIMAL: 0.0765 * ! tax
[ + ] preserving ! total
"Total before tax: " write [ money. ] 2dip
"Tax: " write [ money. ] dip... |
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #FreeBASIC | FreeBASIC | Dim As Longint hamburger_p = 550
Dim As Longint hamburger_q = 4000000000000000
Dim As Longint hamburger_v = hamburger_p * hamburger_q
Dim As Longint milkshake_p = 286
Dim As Longint milkshake_q = 2
Dim As Longint milkshake_v = milkshake_p * milkshake_q
Dim As Longint subtotal = hamburger_v + milkshake_v
Dim As Longint ... |
http://rosettacode.org/wiki/Currying | Currying |
This page uses content from Wikipedia. The original article was at Currying. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
Task
Create a simple demonstrative example of Currying in a specific la... | #F.C5.8Drmul.C3.A6 | Fōrmulæ | package main
import (
"fmt"
"math"
)
func PowN(b float64) func(float64) float64 {
return func(e float64) float64 { return math.Pow(b, e) }
}
func PowE(e float64) func(float64) float64 {
return func(b float64) float64 { return math.Pow(b, e) }
}
type Foo int
func (f Foo) Method(... |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Go | Go | package main
import(
"fmt"
"unsafe"
"reflect"
)
func pointer() {
fmt.Printf("Pointer:\n")
// Create a *int and store the address of 'i' in it. To create a pointer to
// an arbitrary memory location, use something like the following:
// p := (*int)(unsafe.Pointer(uintptr(0x100)))
// And replace '0x100' ... |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #J | J |
function unsafepointers()
intspace = [42]
address = pointer_from_objref(intspace)
println("The address of intspace is $address")
anotherint = unsafe_pointer_to_objref(address)
println("intspace is $(intspace[1]), memory at $address, reference value $(anotherint[1])")
intspace[1] = 123456
p... |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Julia | Julia |
function unsafepointers()
intspace = [42]
address = pointer_from_objref(intspace)
println("The address of intspace is $address")
anotherint = unsafe_pointer_to_objref(address)
println("intspace is $(intspace[1]), memory at $address, reference value $(anotherint[1])")
intspace[1] = 123456
p... |
http://rosettacode.org/wiki/Cyclotomic_polynomial | Cyclotomic polynomial | The nth Cyclotomic polynomial, for any positive integer n, is the unique irreducible polynomial of largest degree with integer coefficients that is a divisor of x^n − 1, and is not a divisor of x^k − 1 for any k < n.
Task
Find and print the first 30 cyclotomic polynomials.
Find and print the order of the first 10... | #Phix | Phix | -- demo\rosetta\Cyclotomic_Polynomial.exw
with javascript_semantics
function degree(sequence p)
for i=length(p) to 1 by -1 do
if p[i]!=0 then return i end if
end for
return -1
end function
function poly_div(sequence n, d)
while length(d)<length(n) do d &=0 end while
integer dn = degree(n),... |
http://rosettacode.org/wiki/Cut_a_rectangle | Cut a rectangle | A given rectangle is made from m × n squares. If m and n are not both odd, then it is possible to cut a path through the rectangle along the square edges such that the rectangle splits into two connected pieces with the same shape (after rotating one of the pieces by 180°). All such paths for 2 × 2 and 4 × 3 rectangles... | #REXX | REXX | /*REXX program cuts rectangles into two symmetric pieces, the rectangles are cut along */
/*────────────────────────────────────────────────── unit dimensions and may be rotated.*/
numeric digits 20 /*be able to handle some big integers. */
parse arg N .; if N=='' | N=="," then N= 10... |
http://rosettacode.org/wiki/Date_manipulation | Date manipulation | Task
Given the date string "March 7 2009 7:30pm EST",
output the time 12 hours later in any human-readable format.
As extra credit, display the resulting time in a time zone different from your own.
| #JavaScript | JavaScript | function add12hours(dateString) {
// Get the parts of the date string
var parts = dateString.split(/\s+/),
date = parts[1],
month = parts[0],
year = parts[2],
time = parts[3];
var hr = Number(time.split(':')[0]),
min = Number(time.split(':')[1].replace(/\D/g,'')),
a... |
http://rosettacode.org/wiki/Deal_cards_for_FreeCell | Deal cards for FreeCell | Free Cell is the solitaire card game that Paul Alfille introduced to the PLATO system in 1978. Jim Horne, at Microsoft, changed the name to FreeCell and reimplemented the game for DOS, then Windows.
This version introduced 32000 numbered deals. (The FreeCell FAQ tells this history.)
As the game became popular, Jim H... | #UNIX_Shell | UNIX Shell | test $# -gt 0 || set -- $((RANDOM % 32000))
for seed; do
print Game $seed:
# Shuffle deck.
deck=({A,{2..9},T,J,Q,K}{C,D,H,S})
for i in {52..1}; do
((seed = (214013 * seed + 2531011) & 0x7fffffff))
((j = (seed >> 16) % i + 1))
t=$deck[$i]
deck[$i]=$deck[$j]
deck[$j]=$t
done
# Deal cards.
print -n ' ... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #F.23 | F# | open System
[ 2008 .. 2121 ]
|> List.choose (fun y -> if DateTime(y,12,25).DayOfWeek = DayOfWeek.Sunday then Some(y) else None)
|> printfn "%A" |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Factor | Factor | USING: calendar math.ranges prettyprint sequences ;
2008 2121 [a,b] [ 12 25 <date> sunday? ] filter . |
http://rosettacode.org/wiki/CUSIP | CUSIP |
This page uses content from Wikipedia. The original article was at CUSIP. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
A CUSIP is a nine-character alphanumeric code that identifies a North A... | #Groovy | Groovy | class Cusip {
private static Boolean isCusip(String s) {
if (s.length() != 9) return false
int sum = 0
for (int i = 0; i <= 7; i++) {
char c = s.charAt(i)
int v
if (c >= ('0' as char) && c <= ('9' as char)) {
v = c - 48
} else... |
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #AWK | AWK |
# syntax: GAWK -f STANDARD_DEVIATION.AWK
BEGIN {
n = split("2,4,4,4,5,5,7,9",arr,",")
for (i=1; i<=n; i++) {
temp[i] = arr[i]
printf("%g %g\n",arr[i],stdev(temp))
}
exit(0)
}
function stdev(arr, i,n,s1,s2,variance,x) {
for (i in arr) {
n++
x = arr[i]
s1 += x ^ 2
... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Delphi | Delphi | ShowMessage(FormatDateTime('yyyy-mm-dd', Now) +#13#10+ FormatDateTime('dddd, mmmm dd, yyyy', Now)); |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Diego | Diego | me_lang(en)_cal(gregorian);
me_msg()_now()_format(yyyy-mm-dd);
me_msg()_now()_format(eeee, mmmm dd, yyyy); |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #AutoHotkey | AutoHotkey | Loop, Read, Data.csv
{
i := A_Index
Loop, Parse, A_LoopReadLine, CSV
Output .= (i=A_Index && i!=1 ? A_LoopField**2 : A_LoopField) (A_Index=5 ? "`n" : ",")
}
FileAppend, %Output%, NewData.csv |
http://rosettacode.org/wiki/Damm_algorithm | Damm algorithm | The Damm algorithm is a checksum algorithm which detects all single digit errors and adjacent transposition errors.
The algorithm is named after H. Michael Damm.
Task
Verify the checksum, stored as last digit of an input.
| #F.C5.8Drmul.C3.A6 | Fōrmulæ | package main
import "fmt"
var table = [10][10]byte{
{0, 3, 1, 7, 5, 9, 8, 6, 4, 2},
{7, 0, 9, 2, 1, 5, 4, 8, 6, 3},
{4, 2, 0, 6, 8, 7, 1, 3, 5, 9},
{1, 7, 5, 0, 9, 8, 3, 4, 2, 6},
{6, 1, 2, 3, 0, 4, 5, 9, 7, 8},
{3, 6, 7, 4, 2, 0, 9, 5, 8, 1},
{5, 8, 6, 9, 7, 2, 0, 1, 3, 4},
{8, 9, 4... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #C | C |
#include<stdio.h>
int main()
{
FILE* fp = fopen("TAPE.FILE","w");
fprintf(fp,"This code should be able to write a file to magnetic tape.\n");
fprintf(fp,"The Wikipedia page on Magnetic tape data storage shows that magnetic tapes are still in use.\n");
fprintf(fp,"In fact, the latest format, at the time of wri... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #C.2B.2B | C++ | #include <iostream>
#include <fstream>
#if defined(_WIN32) || defined(WIN32)
constexpr auto FILENAME = "tape.file";
#else
constexpr auto FILENAME = "/dev/tape";
#endif
int main() {
std::filebuf fb;
fb.open(FILENAME,std::ios::out);
std::ostream os(&fb);
os << "Hello World\n";
fb.close();
retu... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Clojure | Clojure | (spit "/dev/tape" "Hello, World!") |
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #Frink | Frink |
st = 4000000000000000 * 5.50 dollars + 2 * 2.86 dollars
tax = round[st * 7.65 percent, cent]
total = st + tax
println["Subtotal: " + format[st, "dollars", 2]]
println["Tax: " + format[tax, "dollars", 2]]
println["Total: " + format[total, "dollars", 2]]
|
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #Go | Go | package main
import (
"fmt"
"log"
"math/big"
)
// DC for dollars and cents. Value is an integer number of cents.
type DC int64
func (dc DC) String() string {
d := dc / 100
if dc < 0 {
dc = -dc
}
return fmt.Sprintf("%d.%02d", d, dc%100)
}
// Extend returns extended price of a... |
http://rosettacode.org/wiki/Currying | Currying |
This page uses content from Wikipedia. The original article was at Currying. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
Task
Create a simple demonstrative example of Currying in a specific la... | #Go | Go | package main
import (
"fmt"
"math"
)
func PowN(b float64) func(float64) float64 {
return func(e float64) float64 { return math.Pow(b, e) }
}
func PowE(e float64) func(float64) float64 {
return func(b float64) float64 { return math.Pow(b, e) }
}
type Foo int
func (f Foo) Method(... |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Kotlin | Kotlin | // Kotlin/Native Technology Preview
import kotlinx.cinterop.*
fun main(args: Array<String>) {
val intVar = nativeHeap.alloc<IntVar>().apply { value = 42 }
with(intVar) { println("Value is $value, address is $rawPtr") }
intVar.value = 52 // create new value at this address
with(intVar) { println("Va... |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Lua | Lua | local a = {10}
local b = a
print ("address a:"..tostring(a), "value a:"..a[1])
print ("address b:"..tostring(b), "value b:"..b[1])
b[1] = 42
print ("address a:"..tostring(a), "value a:"..a[1])
print ("address b:"..tostring(b), "value b:"..b[1]) |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #M2000_Interpreter | M2000 Interpreter |
Module CheckIt {
structure alfa {
val as long
}
Buffer Clear Beta as alfa*2
Print Beta(0) ' return address
Return Beta, 0!val:=500 ' unsigned integer 32 bit
Print Eval(Beta, 0!val)=500
Return Beta, 0!val:=0xFFFFFFFF
Print Eval(Beta, 0!val)=4294967295
... |
http://rosettacode.org/wiki/Cyclotomic_polynomial | Cyclotomic polynomial | The nth Cyclotomic polynomial, for any positive integer n, is the unique irreducible polynomial of largest degree with integer coefficients that is a divisor of x^n − 1, and is not a divisor of x^k − 1 for any k < n.
Task
Find and print the first 30 cyclotomic polynomials.
Find and print the order of the first 10... | #Python | Python | from itertools import count, chain
from collections import deque
def primes(_cache=[2, 3]):
yield from _cache
for n in count(_cache[-1]+2, 2):
if isprime(n):
_cache.append(n)
yield n
def isprime(n):
for p in primes():
if n%p == 0:
return False
... |
http://rosettacode.org/wiki/Cut_a_rectangle | Cut a rectangle | A given rectangle is made from m × n squares. If m and n are not both odd, then it is possible to cut a path through the rectangle along the square edges such that the rectangle splits into two connected pieces with the same shape (after rotating one of the pieces by 180°). All such paths for 2 × 2 and 4 × 3 rectangles... | #Ruby | Ruby | def cut_it(h, w)
if h.odd?
return 0 if w.odd?
h, w = w, h
end
return 1 if w == 1
nxt = [[w+1, 1, 0], [-w-1, -1, 0], [-1, 0, -1], [1, 0, 1]] # [next,dy,dx]
blen = (h + 1) * (w + 1) - 1
grid = [false] * (blen + 1)
walk = lambda do |y, x, count=0|
return count+1 if y==0 or y==h or x==0 or... |
http://rosettacode.org/wiki/Date_manipulation | Date manipulation | Task
Given the date string "March 7 2009 7:30pm EST",
output the time 12 hours later in any human-readable format.
As extra credit, display the resulting time in a time zone different from your own.
| #jq | jq | "March 7 2009 7:30pm EST"
| strptime("%B %d %Y %I:%M%p %Z")
| .[3] += 12
| mktime | strftime("%B %d %Y %I:%M%p %Z") |
http://rosettacode.org/wiki/Date_manipulation | Date manipulation | Task
Given the date string "March 7 2009 7:30pm EST",
output the time 12 hours later in any human-readable format.
As extra credit, display the resulting time in a time zone different from your own.
| #Julia | Julia | using Dates
function main()
dtstr = "March 7 2009 7:30pm" # Base.Dates doesn't handle "EST"
cleandtstr = replace(dtstr, r"(am|pm)"i, "")
dtformat = dateformat"U dd yyyy HH:MM"
dtime = parse(DateTime, cleandtstr, dtformat) +
Hour(12 * contains(dtstr, r"pm"i)) # add 12h for the pm
println(Da... |
http://rosettacode.org/wiki/Deal_cards_for_FreeCell | Deal cards for FreeCell | Free Cell is the solitaire card game that Paul Alfille introduced to the PLATO system in 1978. Jim Horne, at Microsoft, changed the name to FreeCell and reimplemented the game for DOS, then Windows.
This version introduced 32000 numbered deals. (The FreeCell FAQ tells this history.)
As the game became popular, Jim H... | #Wren | Wren | class Lcg {
construct new(a, c, m, d, s) {
_a = a
_c = c
_m = m
_d = d
_s = s
}
nextInt() {
_s = (_a * _s + _c) % _m
return _s / _d
}
}
var CARDS = "A23456789TJQK"
var SUITS = "♣♦♥♠".toList
var deal = Fn.new {
var cards = List.filled(52, ... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #FBSL | FBSL | #APPTYPE CONSOLE
'In what years between 2008 and 2121 will the 25th of December be a Sunday?
DIM date AS INTEGER, dayname AS STRING
FOR DIM year = 2008 TO 2121
date = year * 10000 + 1225
dayname = dateconv(date,"dddd")
IF dayname = "Sunday" THEN
PRINT "Christmas Day is on a Sunday in ", year
END IF
NEXT
PAUSE
|
http://rosettacode.org/wiki/CUSIP | CUSIP |
This page uses content from Wikipedia. The original article was at CUSIP. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
A CUSIP is a nine-character alphanumeric code that identifies a North A... | #Haskell | Haskell | import Data.List(elemIndex)
data Result = Valid | BadCheck | TooLong | TooShort | InvalidContent deriving Show
-- convert a list of Maybe to a Maybe list.
-- result is Nothing if any of values from the original list are Nothing
allMaybe :: [Maybe a] -> Maybe [a]
allMaybe = sequence
toValue :: Char -> Maybe Int
to... |
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #Axiom | Axiom | )abbrev package TESTD TestDomain
TestDomain(T : Join(Field,RadicalCategory)): Exports == Implementation where
R ==> Record(n : Integer, sum : T, ssq : T)
Exports == AbelianMonoid with
_+ : (%,T) -> %
_+ : (T,%) -> %
sd : % -> T
Implementation == R add
Rep := R -- similar representation and imple... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #EGL | EGL |
// 2012-09-26
SysLib.writeStdout(StrLib.formatDate(DateTimeLib.currentDate(), "yyyy-MM-dd"));
// Wednesday, September 26, 2012
SysLib.setLocale("en", "US");
SysLib.writeStdout(StrLib.formatDate(DateTimeLib.currentDate(), "EEEE, MMMM dd, yyyy"));
|
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Elixir | Elixir | defmodule Date_format do
def iso_date, do: Date.utc_today |> Date.to_iso8601
def iso_date(year, month, day), do: Date.from_erl!({year, month, day}) |> Date.to_iso8601
def long_date, do: Date.utc_today |> long_date
def long_date(year, month, day), do: Date.from_erl!({year, month, day}) |> long_date
@mo... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #AWK | AWK | #!/usr/bin/awk -f
BEGIN { FS = OFS = "," }
NR==1 {
print $0, "SUM"
next
}
{
sum = 0
for (i=1; i<=NF; i++) {
sum += $i
}
print $0, sum
} |
http://rosettacode.org/wiki/Damm_algorithm | Damm algorithm | The Damm algorithm is a checksum algorithm which detects all single digit errors and adjacent transposition errors.
The algorithm is named after H. Michael Damm.
Task
Verify the checksum, stored as last digit of an input.
| #Go | Go | package main
import "fmt"
var table = [10][10]byte{
{0, 3, 1, 7, 5, 9, 8, 6, 4, 2},
{7, 0, 9, 2, 1, 5, 4, 8, 6, 3},
{4, 2, 0, 6, 8, 7, 1, 3, 5, 9},
{1, 7, 5, 0, 9, 8, 3, 4, 2, 6},
{6, 1, 2, 3, 0, 4, 5, 9, 7, 8},
{3, 6, 7, 4, 2, 0, 9, 5, 8, 1},
{5, 8, 6, 9, 7, 2, 0, 1, 3, 4},
{8, 9, 4... |
http://rosettacode.org/wiki/Cuban_primes | Cuban primes | The name cuban has nothing to do with Cuba (the country), but has to do with the
fact that cubes (3rd powers) play a role in its definition.
Some definitions of cuban primes
primes which are the difference of two consecutive cubes.
primes of the form: (n+1)3 - n3.
primes of the form: n3 - ... | #ALGOL_68 | ALGOL 68 | BEGIN
# find some cuban primes (using the definition: a prime p is a cuban prime if #
# p = n^3 - ( n - 1 )^3 #
# for some n > 0) #
# returns a string representation of n with commas... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #COBOL | COBOL | >>SOURCE FORMAT IS FREE
IDENTIFICATION DIVISION.
PROGRAM-ID. MAKE-TAPE-FILE.
ENVIRONMENT DIVISION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT TAPE-FILE
ASSIGN "./TAPE.FILE"
ORGANIZATION IS LINE SEQUENTIAL.
DATA DIVISION.
FILE SECTION.
FD TAPE-FILE.
01 TAPE-FILE-RECORD PIC X(51).
PROCEDU... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Crystal | Crystal | filename = {% if flag?(:win32) %}
"TAPE.FILE"
{% else %}
"/dev/tape"
{% end %}
File.write filename, "howdy, planet!" |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #D | D | import std.stdio;
void main() {
version(Windows) {
File f = File("TAPE.FILE", "w");
} else {
File f = File("/dev/tape", "w");
}
f.writeln("Hello World!");
} |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Delphi | Delphi |
program Create_a_file_on_magnetic_tape;
{$APPTYPE CONSOLE}
const
{$IFDEF WIN32}
FileName = 'tape.file';
{$ELSE}
FileName = '/dev/tape';
{$ENDIF}
var
f: TextFile;
begin
Assign(f, FileName);
Rewrite(f);
Writeln(f, 'Hello World');
close(f);
end.
|
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #Haskell | Haskell | import Data.Fixed
import Text.Printf
type Percent = Centi
type Dollars = Centi
tax :: Percent -> Dollars -> Dollars
tax rate = MkFixed . round . (rate *)
printAmount :: String -> Dollars -> IO ()
printAmount name = printf "%-10s %20s\n" name . showFixed False
main :: IO ()
main = do
let subtotal = 40000000000... |
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #J | J | require 'format/printf'
Items=: ;: 'Hamburger Milkshake'
Quantities=: 4000000000000000 2
Prices=: x: 5.50 2.86
Tax_rate=: x: 0.0765
makeBill=: verb define
'items prices quantities'=. y
values=. prices * quantities
subtotal=. +/ values
tax=. Tax_rate * subtotal
total=. s... |
http://rosettacode.org/wiki/Currying | Currying |
This page uses content from Wikipedia. The original article was at Currying. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
Task
Create a simple demonstrative example of Currying in a specific la... | #Groovy | Groovy | def divide = { Number x, Number y ->
x / y
}
def partsOf120 = divide.curry(120)
println "120: half: ${partsOf120(2)}, third: ${partsOf120(3)}, quarter: ${partsOf120(4)}" |
http://rosettacode.org/wiki/Currying | Currying |
This page uses content from Wikipedia. The original article was at Currying. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
Task
Create a simple demonstrative example of Currying in a specific la... | #Haskell | Haskell | \ -> |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Nim | Nim | type
MyObject = object
x: int
y: float
var
mem = alloc(sizeof(MyObject))
objPtr = cast[ptr MyObject](mem)
echo "object at ", cast[int](mem), ": ", objPtr[]
objPtr[] = MyObject(x: 42, y: 3.1415)
echo "object at ", cast[int](mem), ": ", objPtr[]
|
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Pascal | Pascal | program test;
type
t8Byte = array[0..7] of byte;
var
I : integer;
A : integer absolute I;
K : t8Byte;
L : Int64 absolute K;
begin
I := 0;
A := 255; writeln(I);
I := 4711;writeln(A);
For i in t8Byte do
Begin
K[i]:=i;
write(i:3,' ');
end;
writeln(#8#32);
writeln(L);
end. |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Perl | Perl | # 20210218 Perl programming solution
use strict;
use warnings;
# create an integer object
print "Here is an integer : ", my $target = 42, "\n";
# print the machine address of the object
print "And its reference is : ", my $targetref = \$target, "\n";
# take the address of the object an... |
http://rosettacode.org/wiki/Cyclotomic_polynomial | Cyclotomic polynomial | The nth Cyclotomic polynomial, for any positive integer n, is the unique irreducible polynomial of largest degree with integer coefficients that is a divisor of x^n − 1, and is not a divisor of x^k − 1 for any k < n.
Task
Find and print the first 30 cyclotomic polynomials.
Find and print the order of the first 10... | #Raku | Raku | use Math::Polynomial::Cyclotomic:from<Perl5> <cyclo_poly_iterate cyclo_poly>;
say 'First 30 cyclotomic polynomials:';
my $iterator = cyclo_poly_iterate(1);
say "Φ($_) = " ~ super $iterator().Str for 1..30;
say "\nSmallest cyclotomic polynomial with |n| as a coefficient:";
say "Φ(1) has a coefficient magnitude: 1";
... |
http://rosettacode.org/wiki/Cut_a_rectangle | Cut a rectangle | A given rectangle is made from m × n squares. If m and n are not both odd, then it is possible to cut a path through the rectangle along the square edges such that the rectangle splits into two connected pieces with the same shape (after rotating one of the pieces by 180°). All such paths for 2 × 2 and 4 × 3 rectangles... | #Rust | Rust |
fn cwalk(mut vis: &mut Vec<Vec<bool>>, count: &mut isize, w: usize, h: usize, y: usize, x: usize, d: usize) {
if x == 0 || y == 0 || x == w || y == h {
*count += 1;
return;
}
vis[y][x] = true;
vis[h - y][w - x] = true;
if x != 0 && ! vis[y][x - 1] {
cwalk(&mut vis, coun... |
http://rosettacode.org/wiki/Date_manipulation | Date manipulation | Task
Given the date string "March 7 2009 7:30pm EST",
output the time 12 hours later in any human-readable format.
As extra credit, display the resulting time in a time zone different from your own.
| #Kotlin | Kotlin | // version 1.0.6
import java.text.SimpleDateFormat
import java.util.*
fun main(args: Array<String>) {
val dts = "March 7 2009 7:30pm EST"
val sdf = SimpleDateFormat("MMMM d yyyy h:mma z")
val dt = sdf.parse(dts)
val cal = GregorianCalendar(TimeZone.getTimeZone("EST")) // stay with EST
cal.... |
http://rosettacode.org/wiki/Date_manipulation | Date manipulation | Task
Given the date string "March 7 2009 7:30pm EST",
output the time 12 hours later in any human-readable format.
As extra credit, display the resulting time in a time zone different from your own.
| #langur | langur | val .input = "March 7 2009 7:30pm -05:00"
val .iformat = "January 2 2006 3:04pm -07:00" # input format
val .format = "January 2 2006 3:04pm MST" # output format
val .d1 = toDateTime .input, .iformat
val .d2 = .d1 + dt/PT12H/
val .d3 = toDateTime .d2, "US/Arizona"
val .d4 = toDateTime .d2, ZLS
val .d5 = toDate... |
http://rosettacode.org/wiki/Deal_cards_for_FreeCell | Deal cards for FreeCell | Free Cell is the solitaire card game that Paul Alfille introduced to the PLATO system in 1978. Jim Horne, at Microsoft, changed the name to FreeCell and reimplemented the game for DOS, then Windows.
This version introduced 32000 numbered deals. (The FreeCell FAQ tells this history.)
As the game became popular, Jim H... | #XPL0 | XPL0 | include c:\cxpl\codes; \intrinsic 'code' declarations
string 0; \use zero-terminated string convention
int RandState;
func Rand; \Random number in range 0 to 32767
[RandState:= (214013*RandState + 2531011) & $7FFF_FFFF;
return RandState >> 1... |
http://rosettacode.org/wiki/Deal_cards_for_FreeCell | Deal cards for FreeCell | Free Cell is the solitaire card game that Paul Alfille introduced to the PLATO system in 1978. Jim Horne, at Microsoft, changed the name to FreeCell and reimplemented the game for DOS, then Windows.
This version introduced 32000 numbered deals. (The FreeCell FAQ tells this history.)
As the game became popular, Jim H... | #zkl | zkl | var suits=T(0x1F0D1,0x1F0C1,0x1F0B1,0x1F0A1); //unicode 🃑,🃁,🂱,🂡
var seed=1; const RMAX32=(1).shiftLeft(31) - 1;
fcn rnd{ (seed=((seed*214013 + 2531011).bitAnd(RMAX32))).shiftRight(16) }
fcn game(n){
seed=n;
deck:=(0).pump(52,List,'wrap(n){ if(n>=44) n+=4; // I want JQK, not JCQ
(suits[n%4] + n/4).t... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Forth | Forth |
\ Zeller's Congruence
: weekday ( d m y -- wd) \ 1 mon..7 sun
over 3 < if 1- swap 12 + swap then
100 /mod
dup 4 / swap 2* -
swap dup 4 / + +
swap 1+ 13 5 */ + +
( in zeller 0=sat, so -2 to 0= mon, then mod, then 1+ for 1=mon)
2- 7 mod 1+ ;
: yuletide
." December 25 is Sunday in "
2122 2008 do
... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Fortran | Fortran | PROGRAM YULETIDE
IMPLICIT NONE
INTEGER :: day, year
WRITE(*, "(A)", ADVANCE="NO") "25th of December is a Sunday in"
DO year = 2008, 2121
day = Day_of_week(25, 12, year)
IF (day == 1) WRITE(*, "(I5)", ADVANCE="NO") year
END DO
CONTAINS
FUNCTION Day_of_week(d, m, y)
INTEGER :: Day_of_week, j, k, mm, yy... |
http://rosettacode.org/wiki/CUSIP | CUSIP |
This page uses content from Wikipedia. The original article was at CUSIP. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
A CUSIP is a nine-character alphanumeric code that identifies a North A... | #Icon_and_Unicon | Icon and Unicon | # cusip.icn -- Committee on Uniform Security Identification Procedures
procedure main()
local code, codes
codes := ["037833100", "17275R102", "38259P508",
"594918104", "68389X106", "68389X105"]
while code := pop(codes) do {
writes(code, " : ")
if check_code(code) then
write("... |
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #BBC_BASIC | BBC BASIC | MAXITEMS = 100
FOR i% = 1 TO 8
READ n
PRINT "Value = "; n ", running SD = " FNrunningsd(n)
NEXT
END
DATA 2,4,4,4,5,5,7,9
DEF FNrunningsd(n)
PRIVATE list(), i%
DIM list(MAXITEMS)
i% += 1
list(i%) = n
= SQR(MOD(list())^2/i% - (SUM(list(... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Emacs_Lisp | Emacs Lisp | (format-time-string "%Y-%m-%d")
(format-time-string "%F") ;; new in Emacs 24
;; => "2015-11-08"
(format-time-string "%A, %B %e, %Y")
;; => "Sunday, November 8, 2015" |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Erlang | Erlang | -module(format_date).
-export([iso_date/0, iso_date/1, iso_date/3, long_date/0, long_date/1, long_date/3]).
-import(calendar,[day_of_the_week/1]).
-import(io,[format/2]).
-import(lists,[append/1]).
iso_date() -> iso_date(date()).
iso_date(Year, Month, Day) -> iso_date({Year, Month, Day}).
iso_date(Date) ->
format("... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #BaCon | BaCon | OPTION COLLAPSE TRUE
OPTION DELIM ","
csv$ = LOAD$("data.csv")
DOTIMES AMOUNT(csv$, NL$)
line$ = TOKEN$(csv$, _, NL$)
IF _ = 1 THEN
total$ = APPEND$(line$, 0, "SUM")
ELSE
line$ = CHANGE$(line$, _, STR$(_*10) )
total$ = APPEND$(total$, 0, line$, NL$)
total$ = APPEND$(tot... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #BASIC | BASIC | OPEN "manip.csv" FOR INPUT AS #1
OPEN "manip2.csv" FOR OUTPUT AS #2
LINE INPUT #1, header$
PRINT #2, header$ + ",SUM"
WHILE NOT EOF(1)
INPUT #1, c1, c2, c3, c4, c5
sum = c1 + c2 + c3 + c4 + c5
WRITE #2, c1, c2, c3, c4, c5, sum
WEND
CLOSE #1, #2
END |
http://rosettacode.org/wiki/Damm_algorithm | Damm algorithm | The Damm algorithm is a checksum algorithm which detects all single digit errors and adjacent transposition errors.
The algorithm is named after H. Michael Damm.
Task
Verify the checksum, stored as last digit of an input.
| #Groovy | Groovy | class DammAlgorithm {
private static final int[][] TABLE = [
[0, 3, 1, 7, 5, 9, 8, 6, 4, 2],
[7, 0, 9, 2, 1, 5, 4, 8, 6, 3],
[4, 2, 0, 6, 8, 7, 1, 3, 5, 9],
[1, 7, 5, 0, 9, 8, 3, 4, 2, 6],
[6, 1, 2, 3, 0, 4, 5, 9, 7, 8],
[3, 6, 7, 4, 2, 0, 9, 5, 8, 1],
[5, 8, ... |
http://rosettacode.org/wiki/Cuban_primes | Cuban primes | The name cuban has nothing to do with Cuba (the country), but has to do with the
fact that cubes (3rd powers) play a role in its definition.
Some definitions of cuban primes
primes which are the difference of two consecutive cubes.
primes of the form: (n+1)3 - n3.
primes of the form: n3 - ... | #Bracmat | Bracmat | ( ( cubanprimes
=
. !arg:(?N.?bigN)
& :?cubans
& (0.1.1):(?cube100k.?cube1.?count)
& 0:?i
& whl
' ( 1+!i:?i
& !i+1:?j
& !j^3:?cube2
& !cube2+-1*!cube1:?diff
& ( !diff^1/2:~(!diff^?)
| ( !count:~>!N
& !d... |
http://rosettacode.org/wiki/Cuban_primes | Cuban primes | The name cuban has nothing to do with Cuba (the country), but has to do with the
fact that cubes (3rd powers) play a role in its definition.
Some definitions of cuban primes
primes which are the difference of two consecutive cubes.
primes of the form: (n+1)3 - n3.
primes of the form: n3 - ... | #C | C | #include <limits.h>
#include <math.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
typedef long long llong_t;
struct PrimeArray {
llong_t *ptr;
size_t size;
size_t capacity;
};
struct PrimeArray allocate() {
struct PrimeArray primes;
primes.size = 0;
primes.capacity = 10;
... |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #F.23 | F# |
open System
open System.IO
let env = Environment.OSVersion.Platform
let msg = "Hello Rosetta!"
match env with
| PlatformID.Win32NT | PlatformID.Win32S | PlatformID.Win32Windows | PlatformID.WinCE -> File.WriteAllText("TAPE.FILE", msg)
| _ -> File.WriteAllText("/dev/tape", msg)
|
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Factor | Factor | USING: io.encodings.ascii io.files kernel system ;
"Hello from Rosetta Code!"
os windows? "tape.file" "/dev/tape" ?
ascii set-file-contents |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Fortran | Fortran | Dim As Integer numarch = Freefile
Open "tape.file" For Output As #numarch
Print #numarch, "Soy un archivo de cinta ahora, o espero serlo pronto."
Close #numarch |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #FreeBASIC | FreeBASIC | Dim As Integer numarch = Freefile
Open "tape.file" For Output As #numarch
Print #numarch, "Soy un archivo de cinta ahora, o espero serlo pronto."
Close #numarch |
http://rosettacode.org/wiki/Create_a_file_on_magnetic_tape | Create a file on magnetic tape | The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
| #Go | Go | package main
import (
"archive/tar"
"compress/gzip"
"flag"
"io"
"log"
"os"
"time"
)
func main() {
filename := flag.String("file", "TAPE.FILE", "filename within TAR")
data := flag.String("data", "", "data for file")
outfile := flag.Strin... |
http://rosettacode.org/wiki/Currency | Currency | Task
Show how to represent currency in a simple example, using a data type that represent exact values of dollars and cents.
Note
The IEEE 754 binary floating point representations of numbers like 2.86 and .0765 are not exact.
For this example, data will be two items with prices in dollars and cents, a qu... | #Java | Java | import java.math.*;
import java.util.*;
public class Currency {
final static String taxrate = "7.65";
enum MenuItem {
Hamburger("5.50"), Milkshake("2.86");
private MenuItem(String p) {
price = new BigDecimal(p);
}
public final BigDecimal price;
}
p... |
http://rosettacode.org/wiki/Currying | Currying |
This page uses content from Wikipedia. The original article was at Currying. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
Task
Create a simple demonstrative example of Currying in a specific la... | #Hy | Hy | (defn addN [n]
(fn [x]
(+ x n))) |
http://rosettacode.org/wiki/Currying | Currying |
This page uses content from Wikipedia. The original article was at Currying. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
Task
Create a simple demonstrative example of Currying in a specific la... | #Icon_and_Unicon | Icon and Unicon | procedure main(A)
add2 := addN(2)
write("add2(7) = ",add2(7))
write("add2(1) = ",add2(1))
end
procedure addN(n)
return makeProc{ repeat { (x := (x@&source)[1], x +:= n) } }
end
procedure makeProc(A)
return (@A[1], A[1])
end |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Phix | Phix | poke(0x80,or_bits(peek(0x80),0x40))
#ilASM{ mov al,[0x80]
or al,0x40
mov [0x80],al}
|
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #PicoLisp | PicoLisp | : (setq IntSpace 12345) # Integer
-> 12345
: (setq Address (adr 'IntSpace)) # Encoded machine address
-> -2969166782547
: (set (adr Address) 65535) # Set this address to a new value
-> 65535
: IntSpace # Show the new value
-> 65535 |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #PureBasic | PureBasic | ; Allocate a 1Mb memory area work within to avoid conflicts,
; this address could be any number but it may then fail on some systems.
*a=AllocateMemory(1024*1024)
; Write a int wit value "31415" at address +312,
; using pointer '*a' with a displacement.
PokeI(*a+312, 31415)
; Write a float with value Pi at address ... |
http://rosettacode.org/wiki/Create_an_object_at_a_given_address | Create an object at a given address |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Racket | Racket |
#lang racket
(require ffi/unsafe)
(define x #"Foo")
;; Get the address of the `x' object
(printf "The address of `x' is: ~s\n" (cast x _scheme _long))
(define address (cast x _bytes _long))
(printf "The address of the bytestring it holds: ~s\n" address)
(define y (cast address _long _bytes))
(printf "Converting thi... |
http://rosettacode.org/wiki/Cyclotomic_polynomial | Cyclotomic polynomial | The nth Cyclotomic polynomial, for any positive integer n, is the unique irreducible polynomial of largest degree with integer coefficients that is a divisor of x^n − 1, and is not a divisor of x^k − 1 for any k < n.
Task
Find and print the first 30 cyclotomic polynomials.
Find and print the order of the first 10... | #Sidef | Sidef | var Poly = require('Math::Polynomial')
Poly.string_config(Hash(fold_sign => true, prefix => "", suffix => ""))
func poly_interpolation(v) {
v.len.of {|n| v.len.of {|k| n**k } }.msolve(v)
}
say "First 30 cyclotomic polynomials:"
for k in (1..30) {
var a = (k+1).of { cyclotomic(k, _) }
var Φ = poly_interp... |
http://rosettacode.org/wiki/Cut_a_rectangle | Cut a rectangle | A given rectangle is made from m × n squares. If m and n are not both odd, then it is possible to cut a path through the rectangle along the square edges such that the rectangle splits into two connected pieces with the same shape (after rotating one of the pieces by 180°). All such paths for 2 × 2 and 4 × 3 rectangles... | #Tcl | Tcl | package require Tcl 8.5
proc walk {y x} {
global w ww h cnt grid len
if {!$y || $y==$h || !$x || $x==$w} {
incr cnt 2
return
}
set t [expr {$y*$ww + $x}]
set m [expr {$len - $t}]
lset grid $t [expr {[lindex $grid $t] + 1}]
lset grid $m [expr {[lindex $grid $m] + 1}]
if {![lindex $gri... |
http://rosettacode.org/wiki/Date_manipulation | Date manipulation | Task
Given the date string "March 7 2009 7:30pm EST",
output the time 12 hours later in any human-readable format.
As extra credit, display the resulting time in a time zone different from your own.
| #Lasso | Lasso | local(date) = date('March 7 2009 7:30PM EST',-format='MMMM d yyyy h:mma z')
#date->add(-hour = 24)
#date->timezone = 'GMT' |
http://rosettacode.org/wiki/Date_manipulation | Date manipulation | Task
Given the date string "March 7 2009 7:30pm EST",
output the time 12 hours later in any human-readable format.
As extra credit, display the resulting time in a time zone different from your own.
| #Lingo | Lingo | ----------------------------------------
-- Returns string representation of given date object in YYYY-MM-DD hh:mm:ii format
-- @param {date} dateObj
-- @returns {string}
----------------------------------------
on dateToDateTimeString (dateObj)
str = ""
s = string(dateObj.year)
if s.length<4 then put "0000".char... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #F.C5.8Drmul.C3.A6 | Fōrmulæ | for y = 2008 to 2121
if (parseDate["$y-12-25"] -> ### u ###) == "7"
println[y] |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Frink | Frink | for y = 2008 to 2121
if (parseDate["$y-12-25"] -> ### u ###) == "7"
println[y] |
http://rosettacode.org/wiki/CUSIP | CUSIP |
This page uses content from Wikipedia. The original article was at CUSIP. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
A CUSIP is a nine-character alphanumeric code that identifies a North A... | #J | J | ccd =. 10 | 10 - 10 | [: +/ [: , 10 (#.^:_1) (8 $ 1 2) * '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ*@#' i. ]
ccd '68389X10'
5 |
http://rosettacode.org/wiki/CUSIP | CUSIP |
This page uses content from Wikipedia. The original article was at CUSIP. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
A CUSIP is a nine-character alphanumeric code that identifies a North A... | #Java | Java | import java.util.List;
public class Cusip {
private static Boolean isCusip(String s) {
if (s.length() != 9) return false;
int sum = 0;
for (int i = 0; i <= 7; i++) {
char c = s.charAt(i);
int v;
if (c >= '0' && c <= '9') {
v = c - 48;
... |
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #C | C | #include <stdio.h>
#include <stdlib.h>
#include <math.h>
typedef enum Action { STDDEV, MEAN, VAR, COUNT } Action;
typedef struct stat_obj_struct {
double sum, sum2;
size_t num;
Action action;
} sStatObject, *StatObject;
StatObject NewStatObject( Action action )
{
StatObject so;
so = malloc(sizeof(... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Euphoria | Euphoria | constant days = {"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"}
constant months = {"January","February","March","April","May","June",
"July","August","September","October","November","December"}
sequence now
now = date()
now[1] += 1900
printf(1,"%d-%02d-%02d\n",now[1..3])
printf(1,"%s... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #BQN | BQN |
csvstr ← ⟨"C1,C2,C3,C4,C5", "1,5,9,13,17", "2,6,10,14,18", "3,7,11,15,19", "4,8,12,16,20"⟩
Split ← (⊢-˜¬×+`)∘=⟜','⊸⊔
strdata ← >Split¨csvstr
intdata ← •BQN¨⌾(1⊸↓) strdata
sums ← ⟨"SUMS"⟩ ∾+´˘ 1↓ intdata
done ← sums ∾˜˘ intdata
|
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #C | C |
#define TITLE "CSV data manipulation"
#define URL "http://rosettacode.org/wiki/CSV_data_manipulation"
#define _GNU_SOURCE
#define bool int
#include <stdio.h>
#include <stdlib.h> /* malloc...*/
#include <string.h> /* strtok...*/
#include <ctype.h>
#include <errno.h>
/**
* How to read a CSV file ?
*/
type... |
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