Instruction stringlengths 45 106 | input_code stringlengths 1 13.7k | output_code stringlengths 1 13.7k |
|---|---|---|
Write the same algorithm in Haskell as shown in this C++ implementation. | #include <iostream>
#include <string>
#include <windows.h>
using namespace std;
class bells
{
public:
void start()
{
watch[0] = "Middle"; watch[1] = "Morning"; watch[2] = "Forenoon"; watch[3] = "Afternoon"; watch[4] = "Dog"; watch[5] = "First";
count[0] = "One"; count[1] = "Two"; count[2] = "Three"; cou... | import Control.Concurrent
import Control.Monad
import Data.Time
import Text.Printf
type Microsecond = Int
type Scheduler = TimeOfDay -> Microsecond
getTime :: TimeZone -> IO TimeOfDay
getTime tz = do
t <- getCurrentTime
return $ localTimeOfDay $ utcToLocalTime tz t
getGMTTime = getTime utc
getLocalTime... |
Change the programming language of this snippet from C++ to Haskell without modifying what it does. | #include <iostream>
#include <string>
#include <windows.h>
using namespace std;
class bells
{
public:
void start()
{
watch[0] = "Middle"; watch[1] = "Morning"; watch[2] = "Forenoon"; watch[3] = "Afternoon"; watch[4] = "Dog"; watch[5] = "First";
count[0] = "One"; count[1] = "Two"; count[2] = "Three"; cou... | import Control.Concurrent
import Control.Monad
import Data.Time
import Text.Printf
type Microsecond = Int
type Scheduler = TimeOfDay -> Microsecond
getTime :: TimeZone -> IO TimeOfDay
getTime tz = do
t <- getCurrentTime
return $ localTimeOfDay $ utcToLocalTime tz t
getGMTTime = getTime utc
getLocalTime... |
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <windows.h>
#include <sstream>
#include <ctime>
const float PI = 3.1415926536f, TWO_PI = 2.f * PI;
class vector2
{
public:
vector2( float a = 0, float b = 0 ) { set( a, b ); }
void set( float a, float b ) { x = a; y = b; }
void rotate( float r ) {
float _x = x, _y = y,
s = s... |
import Reflex
import Reflex.Dom
import Reflex.Dom.Time
import Data.Text (Text, pack)
import Data.Map (Map, fromList)
import Data.Time.Clock (getCurrentTime)
import Control.Monad.Trans (liftIO)
type Point = (Float,Float)
type Segment = (Point,Point)
main = mainWidget $ do
dTick <- tickLossy 0.05 =<< liftIO ge... |
Write the same code in Haskell as shown below in C++. | #include <windows.h>
#include <sstream>
#include <ctime>
const float PI = 3.1415926536f, TWO_PI = 2.f * PI;
class vector2
{
public:
vector2( float a = 0, float b = 0 ) { set( a, b ); }
void set( float a, float b ) { x = a; y = b; }
void rotate( float r ) {
float _x = x, _y = y,
s = s... |
import Reflex
import Reflex.Dom
import Reflex.Dom.Time
import Data.Text (Text, pack)
import Data.Map (Map, fromList)
import Data.Time.Clock (getCurrentTime)
import Control.Monad.Trans (liftIO)
type Point = (Float,Float)
type Segment = (Point,Point)
main = mainWidget $ do
dTick <- tickLossy 0.05 =<< liftIO ge... |
Please provide an equivalent version of this C++ code in Haskell. | #include <iostream>
#include <optional>
#include <ranges>
#include <string>
#include <vector>
using namespace std;
struct Patient
{
string ID;
string LastName;
};
struct Visit
{
string PatientID;
string Date;
optional<float> Score;
};
int main(void)
{
auto patients = vector<Patient> {
... | import Data.List
import Data.Maybe
import System.IO (readFile)
import Text.Read (readMaybe)
import Control.Applicative ((<|>))
newtype DB = DB { entries :: [Patient] }
deriving Show
instance Semigroup DB where
DB a <> DB b = normalize $ a <> b
instance Monoid DB where
mempty = DB []
normalize :: [Patient] -... |
Please provide an equivalent version of this C++ code in Haskell. | #include <windows.h>
#include <vector>
#include <string>
using namespace std;
struct Point {
int x, y;
};
class MyBitmap {
public:
MyBitmap() : pen_(nullptr) {}
~MyBitmap() {
DeleteObject(pen_);
DeleteDC(hdc_);
DeleteObject(bmp_);
}
bool Create(int w, int h) {
BITMAPINFO bi;
ZeroMem... |
module Main where
import System.Random
import Data.Word
import Data.Array.Repa as Repa
import Data.Array.Repa.IO.BMP
sqDistance :: Word32 -> Word32 -> Word32 -> Word32 -> Word32
sqDistance !x1 !y1 !x2 !y2 = ((x1-x2)^2) + ((y1-y2)^2)
centers :: Int -> Int -> Array U DIM2 Word32
centers nCenters nCells =
f... |
Port the provided C++ code into Haskell while preserving the original functionality. | #include <windows.h>
#include <vector>
#include <string>
using namespace std;
struct Point {
int x, y;
};
class MyBitmap {
public:
MyBitmap() : pen_(nullptr) {}
~MyBitmap() {
DeleteObject(pen_);
DeleteDC(hdc_);
DeleteObject(bmp_);
}
bool Create(int w, int h) {
BITMAPINFO bi;
ZeroMem... |
module Main where
import System.Random
import Data.Word
import Data.Array.Repa as Repa
import Data.Array.Repa.IO.BMP
sqDistance :: Word32 -> Word32 -> Word32 -> Word32 -> Word32
sqDistance !x1 !y1 !x2 !y2 = ((x1-x2)^2) + ((y1-y2)^2)
centers :: Int -> Int -> Array U DIM2 Word32
centers nCenters nCells =
f... |
Generate a Haskell translation of this C++ snippet without changing its computational steps. | #include <iostream>
#include <vector>
#include <algorithm>
#include <stdexcept>
#include <memory>
#include <sys/time.h>
using std::cout;
using std::endl;
class StopTimer
{
public:
StopTimer(): begin_(getUsec()) {}
unsigned long long getTime() const { return getUsec() - begin_; }
private:
static unsigned l... | inv = [("map",9,150,1), ("compass",13,35,1), ("water",153,200,2), ("sandwich",50,60,2),
("glucose",15,60,2), ("tin",68,45,3), ("banana",27,60,3), ("apple",39,40,3),
("cheese",23,30,1), ("beer",52,10,3), ("cream",11,70,1), ("camera",32,30,1),
("tshirt",24,15,2), ("trousers",48,10,2), ("umbrella",73,40,1), ("wtrous... |
Can you help me rewrite this code in Haskell instead of C++, keeping it the same logically? | #include <iostream>
#include <sstream>
#include <iterator>
#include <vector>
using namespace std;
struct node
{
int val;
unsigned char neighbors;
};
class hSolver
{
public:
hSolver()
{
dx[0] = -1; dx[1] = 0; dx[2] = 1; dx[3] = -1; dx[4] = 1; dx[5] = -1; dx[6] = 0; dx[7] = 1;
dy[0] = -1; dy[1] = -... |
import qualified Data.IntMap as I
import Data.IntMap (IntMap)
import Data.List
import Data.Maybe
import Data.Time.Clock
data BoardProblem = Board
{ cells :: IntMap (IntMap Int)
, endVal :: Int
, onePos :: (Int, Int)
, givens :: [Int]
} deriving (Show, Eq)
tupIns x y v m = I.insert x (I.insert y v (I.find... |
Write the same code in Haskell as shown below in C++. | #include <iostream>
#include <sstream>
#include <iterator>
#include <vector>
using namespace std;
struct node
{
int val;
unsigned char neighbors;
};
class hSolver
{
public:
hSolver()
{
dx[0] = -1; dx[1] = 0; dx[2] = 1; dx[3] = -1; dx[4] = 1; dx[5] = -1; dx[6] = 0; dx[7] = 1;
dy[0] = -1; dy[1] = -... |
import qualified Data.IntMap as I
import Data.IntMap (IntMap)
import Data.List
import Data.Maybe
import Data.Time.Clock
data BoardProblem = Board
{ cells :: IntMap (IntMap Int)
, endVal :: Int
, onePos :: (Int, Int)
, givens :: [Int]
} deriving (Show, Eq)
tupIns x y v m = I.insert x (I.insert y v (I.find... |
Preserve the algorithm and functionality while converting the code from C++ to Haskell. | #include <list>
template <typename T>
std::list<T> strandSort(std::list<T> lst) {
if (lst.size() <= 1)
return lst;
std::list<T> result;
std::list<T> sorted;
while (!lst.empty()) {
sorted.push_back(lst.front());
lst.pop_front();
for (typename std::list<T>::iterator it = lst.begin(); it != lst.en... |
merge :: (Ord a) => [a] -> [a] -> [a]
merge [] ys = ys
merge xs [] = xs
merge (x : xs) (y : ys)
| x <= y = x : merge xs (y : ys)
| otherwise = y : merge (x : xs) ys
strandSort :: (Ord a) => [a] -> [a]
strandSort [] = []
strandSort (x : xs) = merge strand (strandSort rest) where
(strand, rest) = extractStrand x xs
... |
Please provide an equivalent version of this C++ code in Haskell. | #include <functional>
#include <iostream>
#include <iomanip>
#include <math.h>
#include <sstream>
#include <vector>
#include <boost/algorithm/string.hpp>
template<typename T>
T normalize(T a, double b) { return std::fmod(a, b); }
inline double d2d(double a) { return normalize<double>(a, 360); }
inline double g2g(doub... |
import Text.Printf
class (Num a, Fractional a, RealFrac a) => Angle a where
fullTurn :: a
mkAngle :: Double -> a
value :: a -> Double
fromTurn :: Double -> a
toTurn :: a -> Double
normalize :: a -> a
fromTurn t = angle t * fullTurn
toTurn a = value $ a / fullTurn
normalize a = a `modu... |
Preserve the algorithm and functionality while converting the code from C++ to Haskell. | #include <cassert>
#include <cstdlib>
#include <iostream>
#include <stdexcept>
#include <utility>
#include <vector>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xmlerror.h>
#include <libxml/xmlstring.h>
#include <libxml/xmlversion.h>
#include <libxml/xpath.h>
#ifndef LIBXML_XPATH_ENABLED
# e... | import Data.List
import Control.Arrow
import Control.Monad
takeWhileIncl :: (a -> Bool) -> [a] -> [a]
takeWhileIncl _ [] = []
takeWhileIncl p (x:xs)
| p x = x : takeWhileIncl p xs
| otherwise = [x]
getmultiLineItem n = takeWhileIncl(not.isInfixOf ("</" ++ n)). dropWhil... |
Produce a functionally identical Haskell code for the snippet given in C++. | #include <algorithm>
#include <iomanip>
#include <iostream>
#include <map>
#include <ostream>
#include <set>
#include <vector>
template<typename T>
std::ostream& print(std::ostream& os, const T& src) {
auto it = src.cbegin();
auto end = src.cend();
os << "[";
if (it != end) {
os << *it;
... | import Data.List (groupBy, sortBy, intercalate)
type Item = (Int, String)
type ItemList = [Item]
type ItemGroups = [ItemList]
type RankItem a = (a, Int, String)
type RankItemList a = [RankItem a]
prepare :: ItemList -> ItemGroups
prepare = groupBy gf . sortBy (flip compare)
where
gf (a, _) (b, _) = a == b
... |
Write a version of this C++ function in Haskell with identical behavior. | #include <iostream>
#include <string>
#include <map>
#include <algorithm>
using namespace std;
class StraddlingCheckerboard
{
map<char, string> table;
char first[10], second[10], third[10];
int rowU, rowV;
public:
StraddlingCheckerboard(const string &alphabet, int u, int v)
{
rowU = min(u, v);
rowV... | import Data.Char
import Data.Map
charToInt :: Char -> Int
charToInt c = ord c - ord '0'
decodeChar :: String -> (Char,String)
decodeChar ('7':'9':r:rs) = (r,rs)
decodeChar ('7':r:rs) = ("PQUVWXYZ. " !! charToInt r, rs)
decodeChar ('3':r:rs) = ("ABCDFGIJKN" !! charToInt r, rs)
decodeChar (r:rs) = ("H... |
Preserve the algorithm and functionality while converting the code from C++ to Haskell. | #include <iostream>
#include <fstream>
#include <string>
#include <tuple>
#include <vector>
#include <stdexcept>
#include <boost/regex.hpp>
struct Claim {
Claim(const std::string& name) : name_(name), pro_(0), against_(0), propats_(), againstpats_() {
}
void add_pro(const std::string... | import Network.HTTP
import Text.Regex.TDFA
import Text.Printf
getWordList :: IO String
getWordList = do
response <- simpleHTTP.getRequest$ url
getResponseBody response
where url = "http://wiki.puzzlers.org/pub/wordlists/unixdict.txt"
main = do
words <- getWordList
putStrLn "Checking Rule 1... |
Generate an equivalent Haskell version of this C++ code. | #include <iostream>
#include "xtensor/xarray.hpp"
#include "xtensor/xio.hpp"
#include "xtensor-io/ximage.hpp"
xt::xarray<int> init_grid (unsigned long x_dim, unsigned long y_dim)
{
xt::xarray<int>::shape_type shape = { x_dim, y_dim };
xt::xarray<int> grid(shape);
grid(x_dim/2, y_dim/2) = 64000;
r... |
module Rosetta.AbelianSandpileModel.ST
( simulate
, test
, toPGM
) where
import Control.Monad.Reader (asks, MonadReader (..), ReaderT, runReaderT)
import Control.Monad.ST (runST, ST)
import Control.Monad.State (evalStateT, forM_, lift, MonadState (..), StateT, modify, when)
import Data.Array.ST (f... |
Write the same algorithm in Haskell as shown in this C++ implementation. | #include <iostream>
#include "xtensor/xarray.hpp"
#include "xtensor/xio.hpp"
#include "xtensor-io/ximage.hpp"
xt::xarray<int> init_grid (unsigned long x_dim, unsigned long y_dim)
{
xt::xarray<int>::shape_type shape = { x_dim, y_dim };
xt::xarray<int> grid(shape);
grid(x_dim/2, y_dim/2) = 64000;
r... |
module Rosetta.AbelianSandpileModel.ST
( simulate
, test
, toPGM
) where
import Control.Monad.Reader (asks, MonadReader (..), ReaderT, runReaderT)
import Control.Monad.ST (runST, ST)
import Control.Monad.State (evalStateT, forM_, lift, MonadState (..), StateT, modify, when)
import Data.Array.ST (f... |
Write the same code in Haskell as shown below in C++. | #include <algorithm>
#include <iostream>
#include <sstream>
#include <gmpxx.h>
using integer = mpz_class;
std::string to_string(const integer& n) {
std::ostringstream out;
out << n;
return out.str();
}
integer next_highest(const integer& n) {
std::string str(to_string(n));
if (!std::next_permuta... | import Data.List (nub, permutations, sort)
digitShuffleSuccessors :: Integer -> [Integer]
digitShuffleSuccessors n =
(fmap . (+) <*> (nub . sort . concatMap go . permutations . show)) n
where
go ds
| 0 >= delta = []
| otherwise = [delta]
where
delta = (read ds :: Integer) - n
main :... |
Change the programming language of this snippet from C++ to Haskell without modifying what it does. | #include <algorithm>
#include <iostream>
#include <sstream>
#include <gmpxx.h>
using integer = mpz_class;
std::string to_string(const integer& n) {
std::ostringstream out;
out << n;
return out.str();
}
integer next_highest(const integer& n) {
std::string str(to_string(n));
if (!std::next_permuta... | import Data.List (nub, permutations, sort)
digitShuffleSuccessors :: Integer -> [Integer]
digitShuffleSuccessors n =
(fmap . (+) <*> (nub . sort . concatMap go . permutations . show)) n
where
go ds
| 0 >= delta = []
| otherwise = [delta]
where
delta = (read ds :: Integer) - n
main :... |
Rewrite the snippet below in Haskell so it works the same as the original C++ code. | #include <iostream>
#include <string>
#include <cctype>
#include <cstdint>
typedef std::uint64_t integer;
const char* small[] = {
"zero", "one", "two", "three", "four", "five", "six", "seven", "eight",
"nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
"sixteen", "seventeen", "eighteen"... | module Main where
import Data.List (find)
import Data.Char (toUpper)
firstNums :: [String]
firstNums =
[ "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten",
"eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"
]
tens :: [Stri... |
Convert the following code from C++ to Haskell, ensuring the logic remains intact. | #include <iomanip>
#include <iostream>
#define _USE_MATH_DEFINES
#include <math.h>
constexpr double degrees(double deg) {
const double tau = 2.0 * M_PI;
return deg * tau / 360.0;
}
const double part_ratio = 2.0 * cos(degrees(72));
const double side_ratio = 1.0 / (part_ratio + 2.0);
struct Point {
doubl... | import Graphics.Gloss
pentaflake :: Int -> Picture
pentaflake order = iterate transformation pentagon !! order
where
transformation = Scale s s . foldMap copy [0,72..288]
copy a = Rotate a . Translate 0 x
pentagon = Polygon [ (sin a, cos a) | a <- [0,2*pi/5..2*pi] ]
x = 2*cos(pi/5)
s = 1/(1+x)
... |
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <iostream>
#include <string>
#include <time.h>
using namespace std;
namespace
{
void placeRandomly(char* p, char c)
{
int loc = rand() % 8;
if (!p[loc])
p[loc] = c;
else
placeRandomly(p, c);
}
int placeFirst(char* p, char c, int loc = 0)
{
while (p[loc]) ++loc;
p[loc] = ... | import Data.List
import qualified Data.Set as Set
data Piece = K | Q | R | B | N deriving (Eq, Ord, Show)
isChess960 :: [Piece] -> Bool
isChess960 rank =
(odd . sum $ findIndices (== B) rank) && king > rookA && king < rookB
where
Just king = findIndex (== K) rank
[rookA, rookB] = findIndices (== R) r... |
Change the programming language of this snippet from C++ to Haskell without modifying what it does. | #include <iostream>
#include <string>
#include <cstdint>
typedef std::uint64_t integer;
struct number_names {
const char* cardinal;
const char* ordinal;
};
const number_names small[] = {
{ "zero", "zeroth" }, { "one", "first" }, { "two", "second" },
{ "three", "third" }, { "four", "fourth" }, { "five... | spellOrdinal :: Integer -> String
spellOrdinal n
| n <= 0 = "not ordinal"
| n < 20 = small n
| n < 100 = case divMod n 10 of
(k, 0) -> spellInteger (10*k) ++ "th"
(k, m) -> spellInteger (10*k) ++ "-" ++ spellOrdinal m
| n < 1000 = case divMod n 100 of
(k, 0) -> spellInteger (100*k) ++ "th"
... |
Generate an equivalent Haskell version of this C++ code. | #include <boost/asio/ip/address.hpp>
#include <cstdint>
#include <iostream>
#include <iomanip>
#include <limits>
#include <string>
using boost::asio::ip::address;
using boost::asio::ip::address_v4;
using boost::asio::ip::address_v6;
using boost::asio::ip::make_address;
using boost::asio::ip::make_address_v4;
using boo... | import Data.List (isInfixOf)
import Numeric (showHex)
import Data.Char (isDigit)
data IPChunk = IPv6Chunk String | IPv4Chunk (String, String) |
IPv6WithPort [IPChunk] String | IPv6NoPort [IPChunk] |
IPv4WithPort IPChunk String | IPv4NoPort IPChunk |
IPInvalid | IPZeroSection | IPUndefinedWithPort String |
... |
Produce a language-to-language conversion: from C++ to Haskell, same semantics. | #include <iostream>
#include <utility>
#include <vector>
using Point = std::pair<double, double>;
constexpr auto eps = 1e-14;
std::ostream &operator<<(std::ostream &os, const Point &p) {
auto x = p.first;
if (x == 0.0) {
x = 0.0;
}
auto y = p.second;
if (y == 0.0) {
y = 0.0;
}
... | import Data.Tuple.Curry
main :: IO ()
main =
mapM_ putStrLn $
concatMap
(("" :) . uncurryN task)
[ ((-10, 11), (10, -9), ((3, -5), 3))
, ((-10, 11), (-11, 12), ((3, -5), 3))
, ((3, -2), (7, -2), ((3, -5), 3))
, ((3, -2), (7, -2), ((0, 0), 4))
, ((0, -3), (0, 6), ((0, 0), 4))
, ((6, 3), ... |
Can you help me rewrite this code in Haskell instead of C++, keeping it the same logically? | #include <iostream>
#include <cstring>
int findNumOfDec(const char *s) {
int pos = 0;
while (s[pos] && s[pos++] != '.') {}
return strlen(s + pos);
}
void test(const char *s) {
int num = findNumOfDec(s);
const char *p = num != 1 ? "s" : "";
std::cout << s << " has " << num << " decimal" << p <... | decimal :: String -> Int
decimal [] = 0
decimal ('.':xs) = length xs
decimal (_:xs) = decimal xs
numDecimal :: Double -> Int
numDecimal = decimal . show
main = print . map numDecimal $ [12.0, 12.345, 12.3450, 12.345555555555, 12.34555555555555555555, 1.2345e+54]
|
Change the following C++ code into Haskell without altering its purpose. | #include <boost/spirit.hpp>
#include <boost/spirit/tree/ast.hpp>
#include <string>
#include <cassert>
#include <iostream>
#include <istream>
#include <ostream>
using boost::spirit::rule;
using boost::spirit::parser_tag;
using boost::spirit::ch_p;
using boost::spirit::real_p;
using boost::spirit::tree_no... |
import Text.Parsec
import Text.Parsec.Expr
import Text.Parsec.Combinator
import Data.Functor
import Data.Function (on)
data Exp
= Num Int
| Add Exp
Exp
| Sub Exp
Exp
| Mul Exp
Exp
| Div Exp
Exp
expr
:: Stream s m Char
=> ParsecT s u m Exp
expr = buildExpressionParser ta... |
Rewrite the snippet below in Haskell so it works the same as the original C++ code. | #include <boost/spirit.hpp>
#include <boost/spirit/tree/ast.hpp>
#include <string>
#include <cassert>
#include <iostream>
#include <istream>
#include <ostream>
using boost::spirit::rule;
using boost::spirit::parser_tag;
using boost::spirit::ch_p;
using boost::spirit::real_p;
using boost::spirit::tree_no... |
import Text.Parsec
import Text.Parsec.Expr
import Text.Parsec.Combinator
import Data.Functor
import Data.Function (on)
data Exp
= Num Int
| Add Exp
Exp
| Sub Exp
Exp
| Mul Exp
Exp
| Div Exp
Exp
expr
:: Stream s m Char
=> ParsecT s u m Exp
expr = buildExpressionParser ta... |
Keep all operations the same but rewrite the snippet in Haskell. | #include <map>
#include <iostream>
#include <string>
int main()
{
std::map<char, std::string> rep =
{{'a', "DCaBA"},
{'b', "E"},
{'r', "Fr"}};
std::string magic = "abracadabra";
for(auto it = magic.begin(); it != magic.end(); ++it)
{
if(auto f = rep.find(*it); f != rep.end() && !f->second... | import Data.List (mapAccumL)
import qualified Data.Map.Strict as M
import Data.Maybe (fromMaybe)
nthCharsReplaced :: M.Map Char [Maybe Char] -> String -> String
nthCharsReplaced ruleMap = snd . mapAccumL go ruleMap
where
go a c =
case M.lookup c a of
Nothing -> (a, c)
Just [] -> (a, c)
... |
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <map>
#include <iostream>
#include <string>
int main()
{
std::map<char, std::string> rep =
{{'a', "DCaBA"},
{'b', "E"},
{'r', "Fr"}};
std::string magic = "abracadabra";
for(auto it = magic.begin(); it != magic.end(); ++it)
{
if(auto f = rep.find(*it); f != rep.end() && !f->second... | import Data.List (mapAccumL)
import qualified Data.Map.Strict as M
import Data.Maybe (fromMaybe)
nthCharsReplaced :: M.Map Char [Maybe Char] -> String -> String
nthCharsReplaced ruleMap = snd . mapAccumL go ruleMap
where
go a c =
case M.lookup c a of
Nothing -> (a, c)
Just [] -> (a, c)
... |
Change the programming language of this snippet from C++ to Haskell without modifying what it does. | #include <stdio.h>
#include <stdlib.h>
void clear() {
for(int n = 0;n < 10; n++) {
printf("\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\r\n\r\n\r\n");
}
}
#define UP "00^00\r\n00|00\r\n00000\r\n"
#define DOWN "00000\r\n00|00\r\n00v00\r\n"
#define LEFT "00000\r\n<--00\r\n00000\r\n"
#define RIGHT "00000\r\n00-->\r\n00000\r\... | import qualified Graphics.UI.GLFW as GLFW
import Graphics.Win32.Key
import Control.Monad.RWS.Strict (liftIO)
main = do
liftIO $ do
_ <- GLFW.init
GLFW.pollEvents
(jxrot, jyrot) <- liftIO $ getJoystickDirections GLFW.Joystick'1
putStrLn $ (show jxrot) ++ " " ++ (show jyrot)... |
Change the following C++ code into Haskell without altering its purpose. | #include <iostream>
#include <set>
#include <tuple>
#include <vector>
using namespace std;
template<typename P>
void PrintPayloads(const P &payloads, int index, bool isLast)
{
if(index < 0 || index >= (int)size(payloads)) cout << "null";
else cout << "'" << payloads[index] << "'";
if (!isLast) co... |
data Template a = Val a | List [Template a]
deriving ( Show
, Functor
, Foldable
, Traversable )
|
Change the programming language of this snippet from C++ to Haskell without modifying what it does. | #include <iostream>
struct fraction {
fraction(int n, int d) : numerator(n), denominator(d) {}
int numerator;
int denominator;
};
std::ostream& operator<<(std::ostream& out, const fraction& f) {
out << f.numerator << '/' << f.denominator;
return out;
}
class farey_sequence {
public:
explicit ... | import Data.List (unfoldr, mapAccumR)
import Data.Ratio ((%), denominator, numerator)
import Text.Printf (PrintfArg, printf)
farey :: Integer -> [Rational]
farey n = 0 : unfoldr step (0, 1, 1, n)
where
step (a, b, c, d)
| c > n = Nothing
| otherwise =
let k = (n + b) `quot` d
in Just... |
Maintain the same structure and functionality when rewriting this code in Haskell. | #include <iostream>
struct fraction {
fraction(int n, int d) : numerator(n), denominator(d) {}
int numerator;
int denominator;
};
std::ostream& operator<<(std::ostream& out, const fraction& f) {
out << f.numerator << '/' << f.denominator;
return out;
}
class farey_sequence {
public:
explicit ... | import Data.List (unfoldr, mapAccumR)
import Data.Ratio ((%), denominator, numerator)
import Text.Printf (PrintfArg, printf)
farey :: Integer -> [Rational]
farey n = 0 : unfoldr step (0, 1, 1, n)
where
step (a, b, c, d)
| c > n = Nothing
| otherwise =
let k = (n + b) `quot` d
in Just... |
Produce a functionally identical Haskell code for the snippet given in C++. | #include <cstdint>
#include <iostream>
#include <string>
using integer = uint64_t;
integer divisor_sum(integer n) {
integer total = 1, power = 2;
for (; n % 2 == 0; power *= 2, n /= 2)
total += power;
for (integer p = 3; p * p <= n; p += 2) {
integer sum = 1;
for (power ... | divisors :: (Integral a) => a -> [a]
divisors n = filter ((0 ==) . (n `mod`)) [1 .. (n `div` 2)]
data Class
= Terminating
| Perfect
| Amicable
| Sociable
| Aspiring
| Cyclic
| Nonterminating
deriving (Show)
aliquot :: (Integral a) => a -> [a]
aliquot 0 = [0]
aliquot n = n : (aliquot $ sum $ divisors n... |
Convert this C++ snippet to Haskell and keep its semantics consistent. | #include <cstdint>
#include <iostream>
#include <string>
using integer = uint64_t;
integer divisor_sum(integer n) {
integer total = 1, power = 2;
for (; n % 2 == 0; power *= 2, n /= 2)
total += power;
for (integer p = 3; p * p <= n; p += 2) {
integer sum = 1;
for (power ... | divisors :: (Integral a) => a -> [a]
divisors n = filter ((0 ==) . (n `mod`)) [1 .. (n `div` 2)]
data Class
= Terminating
| Perfect
| Amicable
| Sociable
| Aspiring
| Cyclic
| Nonterminating
deriving (Show)
aliquot :: (Integral a) => a -> [a]
aliquot 0 = [0]
aliquot n = n : (aliquot $ sum $ divisors n... |
Preserve the algorithm and functionality while converting the code from C++ to Haskell. | #include <iomanip>
#include <iostream>
bool is_prime(unsigned int n) {
if (n < 2)
return false;
if (n % 2 == 0)
return n == 2;
if (n % 3 == 0)
return n == 3;
for (unsigned int p = 5; p * p <= n; p += 4) {
if (n % p == 0)
return false;
p += 2;
... | import Data.List.Split ( chunksOf )
import Data.List ( (!!) )
isPrime :: Int -> Bool
isPrime n
|n == 2 = True
|n == 1 = False
|otherwise = null $ filter (\i -> mod n i == 0 ) [2 .. root]
where
root :: Int
root = floor $ sqrt $ fromIntegral n
isMagnanimous :: Int -> Bool
isMagnanimous n = a... |
Generate a Haskell translation of this C++ snippet without changing its computational steps. | #include <iostream>
bool isPrime(uint64_t n) {
if (n < 2) return false;
if (n % 2 == 0) return n == 2;
if (n % 3 == 0) return n == 3;
uint64_t test = 5;
while (test * test < n) {
if (n % test == 0) return false;
test += 2;
if (n % test == 0) return false;
test += 4;... | import Data.Numbers.Primes (primes)
import Text.Printf (printf)
lucasLehmer :: Int -> Bool
lucasLehmer p = iterate f 4 !! p-2 == 0
where
f b = (b^2 - 2) `mod` m
m = 2^p - 1
main = mapM_ (printf "M %d\n") $ take 20 mersenne
where
mersenne = filter lucasLehmer primes
|
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <iostream>
bool isPrime(uint64_t n) {
if (n < 2) return false;
if (n % 2 == 0) return n == 2;
if (n % 3 == 0) return n == 3;
uint64_t test = 5;
while (test * test < n) {
if (n % test == 0) return false;
test += 2;
if (n % test == 0) return false;
test += 4;... | import Data.Numbers.Primes (primes)
import Text.Printf (printf)
lucasLehmer :: Int -> Bool
lucasLehmer p = iterate f 4 !! p-2 == 0
where
f b = (b^2 - 2) `mod` m
m = 2^p - 1
main = mapM_ (printf "M %d\n") $ take 20 mersenne
where
mersenne = filter lucasLehmer primes
|
Write the same code in Haskell as shown below in C++. | #include <array>
#include <iostream>
#include <vector>
#include <boost/circular_buffer.hpp>
#include "prime_sieve.hpp"
int main() {
using std::cout;
using std::vector;
using boost::circular_buffer;
using group_buffer = circular_buffer<vector<int>>;
const int max = 1000035;
const int max_group_... | import Text.Printf (printf)
import Data.Numbers.Primes (isPrime, primes)
type Pair = (Int, Int)
type Triplet = (Int, Int, Int)
type Quad = (Int, Int, Int, Int)
type Quin = (Int, Int, Int, Int, Int)
type Result = ([Pair], [Triplet], [Quad], [Quin], [Int])
groups :: Int -> Result -> Result
groups n r@(p, t, q,... |
Write the same code in Haskell as shown below in C++. | #include <algorithm>
#include <iomanip>
#include <iostream>
#include <map>
#include <sstream>
#include <vector>
template <typename T>
size_t indexOf(const std::vector<T> &v, const T &k) {
auto it = std::find(v.cbegin(), v.cend(), k);
if (it != v.cend()) {
return it - v.cbegin();
}
return -1;
}... | import Data.List (groupBy, sortOn, tails, transpose)
import Data.Function (on)
taxis :: Int -> [[(Int, ((Int, Int), (Int, Int)))]]
taxis nCubes =
filter ((> 1) . length) $
groupBy (on (==) fst) $
sortOn fst
[ (fst x + fst y, (x, y))
| (x:t) <- tails $ ((^ 3) >>= (,)) <$> [1 .. nCubes]
, y <- t ]
... |
Generate a Haskell translation of this C++ snippet without changing its computational steps. | #include <algorithm>
#include <iostream>
#include <iterator>
#include <locale>
#include <vector>
#include "prime_sieve.hpp"
const int limit1 = 1000000;
const int limit2 = 10000000;
class prime_info {
public:
explicit prime_info(int max) : max_print(max) {}
void add_prime(int prime);
void print(std::ostrea... | import Text.Printf (printf)
import Data.Numbers.Primes (primes)
xPrimes :: (Real a, Fractional b) => (b -> b -> Bool) -> [a] -> [a]
xPrimes op ps@(p1:p2:p3:xs)
| realToFrac p2 `op` (realToFrac (p1 + p3) / 2) = p2 : xPrimes op (tail ps)
| otherwise = xPrimes op (tail ps)
main :: IO ()
main = do
printf "First 36... |
Convert this C++ snippet to Haskell and keep its semantics consistent. | #include <vector>
#include <string>
#include <algorithm>
#include <iostream>
#include <sstream>
using namespace std;
#if 1
typedef unsigned long usingle;
typedef unsigned long long udouble;
const int word_len = 32;
#else
typedef unsigned short usingle;
typedef unsigned long udouble;
const int word_len = 16;
#endif
... | leftFact :: [Integer]
leftFact = scanl (+) 0 fact
fact :: [Integer]
fact = scanl (*) 1 [1 ..]
main :: IO ()
main =
mapM_
putStrLn
[ "0 ~ 10:"
, show $ (leftFact !!) <$> [0 .. 10]
, ""
, "20 ~ 110 by tens:"
, unlines $ show . (leftFact !!) <$> [20,30 .. 110]
, ""
, "length of 1,000 ~ ... |
Produce a functionally identical Haskell code for the snippet given in C++. | #include <vector>
#include <string>
#include <algorithm>
#include <iostream>
#include <sstream>
using namespace std;
#if 1
typedef unsigned long usingle;
typedef unsigned long long udouble;
const int word_len = 32;
#else
typedef unsigned short usingle;
typedef unsigned long udouble;
const int word_len = 16;
#endif
... | leftFact :: [Integer]
leftFact = scanl (+) 0 fact
fact :: [Integer]
fact = scanl (*) 1 [1 ..]
main :: IO ()
main =
mapM_
putStrLn
[ "0 ~ 10:"
, show $ (leftFact !!) <$> [0 .. 10]
, ""
, "20 ~ 110 by tens:"
, unlines $ show . (leftFact !!) <$> [20,30 .. 110]
, ""
, "length of 1,000 ~ ... |
Convert this C++ block to Haskell, preserving its control flow and logic. | #include <cstdint>
#include <iomanip>
#include <iostream>
bool is_prime(uint64_t n) {
if (n < 2)
return false;
if (n % 2 == 0)
return n == 2;
if (n % 3 == 0)
return n == 3;
for (uint64_t p = 5; p * p <= n; p += 4) {
if (n % p == 0)
return false;
p += ... | import Control.Monad.Memo (Memo, memo, startEvalMemo)
import Math.NumberTheory.Primes.Testing (isPrime)
import System.Environment (getArgs)
import Text.Printf (printf)
type I = Integer
motzkin :: I -> Memo I I I
motzkin 0 = return 1
motzkin 1 = return 1
motzkin n = do
m1 <- memo motzkin (n-1)
m2 <- memo motzkin... |
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <iostream>
#include <vector>
const std::vector<bool> p{
false, false, true, true, false,
true, false, true, false, false,
false, true, false, true, false,
false, false, true, false
};
bool isStrange(long n) {
if (n < 10) {
return false;
}
for (; n >= 10; n /= 10) {
... | import Data.List (intercalate)
import Data.List.Split (chunksOf)
isStrangePlus :: Int -> Bool
isStrangePlus n =
all
(\(a, b) -> (a + b) `elem` [2, 3, 5, 7, 11, 13, 17])
$ (zip <*> tail) (digits n)
digits :: Int -> [Int]
digits = fmap (read . return) . show
main =
let xs = filter isStrangePlus [100 ..... |
Preserve the algorithm and functionality while converting the code from C++ to Haskell. | #include <iostream>
#include <vector>
const std::vector<bool> p{
false, false, true, true, false,
true, false, true, false, false,
false, true, false, true, false,
false, false, true, false
};
bool isStrange(long n) {
if (n < 10) {
return false;
}
for (; n >= 10; n /= 10) {
... | import Data.List (intercalate)
import Data.List.Split (chunksOf)
isStrangePlus :: Int -> Bool
isStrangePlus n =
all
(\(a, b) -> (a + b) `elem` [2, 3, 5, 7, 11, 13, 17])
$ (zip <*> tail) (digits n)
digits :: Int -> [Int]
digits = fmap (read . return) . show
main =
let xs = filter isStrangePlus [100 ..... |
Please provide an equivalent version of this C++ code in Haskell. | #include <iostream>
#include <cstdint>
using integer = uint32_t;
integer next_prime_digit_number(integer n) {
if (n == 0)
return 2;
switch (n % 10) {
case 2:
return n + 1;
case 3:
case 5:
return n + 2;
default:
return 2 + next_prime_digit_number(n/10) * 10;
... |
import Control.Monad (guard)
import Math.NumberTheory.Primes.Testing (isPrime)
import Data.List.Split (chunksOf)
import Data.List (intercalate)
import Text.Printf (printf)
smarandache :: [Integer]
smarandache = [2,3,5,7] <> s [2,3,5,7] >>= \x -> guard (isPrime x) >> [x]
where s xs = r <> s r where r = xs >>= \x -> [... |
Keep all operations the same but rewrite the snippet in Haskell. | #include <iostream>
#include <sstream>
#include <iomanip>
using namespace std;
class magicSqr
{
public:
magicSqr( int d ) {
while( d % 4 > 0 ) { d++; }
sz = d;
sqr = new int[sz * sz];
fillSqr();
}
~magicSqr() { delete [] sqr; }
void display() const {
cout << "D... | import Data.List (transpose, unfoldr, intercalate)
import Data.List.Split (chunksOf)
import Data.Bool (bool)
import Control.Monad (forM_)
magicSquare :: Int -> [[Int]]
magicSquare n
| rem n 4 > 0 = []
| otherwise =
chunksOf n $ zipWith (flip (bool =<< (-) limit)) series [1 .. sqr]
where
sqr = n * n
l... |
Write a version of this C++ function in Haskell with identical behavior. | #include <cstdint>
#include <iostream>
#include <string>
using integer = uint64_t;
bool square_free(integer n) {
if (n % 4 == 0)
return false;
for (integer p = 3; p * p <= n; p += 2) {
integer count = 0;
for (; n % p == 0; n /= p) {
if (++count > 1)
return f... | import Data.List.Split (chunksOf)
import Math.NumberTheory.Primes (factorise)
import Text.Printf (printf)
isSquareFree :: Integer -> Bool
isSquareFree = all ((== 1) . snd) . factorise
squareFrees :: Integer -> Integer -> [Integer]
squareFrees lo hi = filter isSquareFree [lo..hi]
counts :: (Ord a, Num b) => [a] ... |
Can you help me rewrite this code in Haskell instead of C++, keeping it the same logically? | #include <array>
#include <iomanip>
#include <iostream>
const int MC = 103 * 1000 * 10000 + 11 * 9 + 1;
std::array<bool, MC + 1> SV;
void sieve() {
std::array<int, 10000> dS;
for (int a = 9, i = 9999; a >= 0; a--) {
for (int b = 9; b >= 0; b--) {
for (int c = 9, s = a + b; c >= 0; c--) {
... | import Control.Monad (forM_)
import Text.Printf
selfs :: [Integer]
selfs = sieve (sumFs [0..]) [0..]
where
sumFs = zipWith (+) [ a+b+c+d+e+f+g+h+i+j
| a <- [0..9] , b <- [0..9]
, c <- [0..9] , d <- [0..9]
, e <- [0..9] , f <- [0..9]
... |
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <cstdint>
#include <iomanip>
#include <iostream>
uint64_t digit_sum(uint64_t n, uint64_t sum) {
++sum;
while (n > 0 && n % 10 == 0) {
sum -= 9;
n /= 10;
}
return sum;
}
inline bool divisible(uint64_t n, uint64_t d) {
if ((d & 1) == 0 && (n & 1) == 1)
return false... |
import Control.Monad (guard)
import Text.Printf (printf)
import Data.List (intercalate, unfoldr)
import Data.List.Split (chunksOf)
import Data.Tuple (swap)
nivens :: [Int]
nivens = [1..] >>= \n -> guard (n `rem` digitSum n == 0) >> [n]
where
digitSum = sum . unfoldr (\x -> guard (x > 0) >> pure (swap $ x `quotRem`... |
Rewrite the snippet below in Haskell so it works the same as the original C++ code. | #include <iostream>
#include <iomanip>
using namespace std;
class ormConverter
{
public:
ormConverter() : AR( 0.7112f ), CE( 0.01f ), DI( 0.0254f ), FU( 0.3048f ), KI( 1000.0f ), LI( 0.00254f ), ME( 1.0f ),
MI( 7467.6f ), PI( 0.1778f ), SA( 2.1336f ), TO( 0.000254f ), VE( 0.04445f ), VR( 1066.8f ) {}
... | module Main where
import Text.Printf (printf)
import System.Environment (getArgs, getProgName)
tochka = ("tochka" , 0.000254)
liniya = ("liniya" , 0.00254)
centimeter = ("centimeter", 0.01)
diuym = ("diuym" , 0.0254)
vershok = ("vershok" , 0.04445)
piad = ("piad" , 0.1778)
fut ... |
Generate an equivalent Haskell version of this C++ code. | #include <iomanip>
#include <iostream>
int digit_sum(int n) {
int sum = 0;
for (; n > 0; n /= 10)
sum += n % 10;
return sum;
}
int main() {
for (int n = 1; n <= 70; ++n) {
for (int m = 1;; ++m) {
if (digit_sum(m * n) == n) {
std::cout << std::setw(8) << m <<... | import Data.Bifunctor (first)
import Data.List (elemIndex, intercalate, transpose)
import Data.List.Split (chunksOf)
import Data.Maybe (fromJust)
import Text.Printf (printf)
a131382 :: [Int]
a131382 =
fromJust . (elemIndex <*> productDigitSums)
<$> [1 ..]
productDigitSums :: Int -> [Int]
productDigitSums n = ... |
Generate a Haskell translation of this C++ snippet without changing its computational steps. | #include <iostream>
#include <vector>
constexpr int N = 2200;
constexpr int N2 = 2 * N * N;
int main() {
using namespace std;
vector<bool> found(N + 1);
vector<bool> aabb(N2 + 1);
int s = 3;
for (int a = 1; a < N; ++a) {
int aa = a * a;
for (int b = 1; b < N; ++b) {
... | powersOfTwo :: [Int]
powersOfTwo = iterate (2 *) 1
unrepresentable :: [Int]
unrepresentable = merge powersOfTwo ((5 *) <$> powersOfTwo)
merge :: [Int] -> [Int] -> [Int]
merge xxs@(x:xs) yys@(y:ys)
| x < y = x : merge xs yys
| otherwise = y : merge xxs ys
main :: IO ()
main = do
putStrLn "The values of d <= 220... |
Translate the given C++ code snippet into Haskell without altering its behavior. | #include <algorithm>
#include <iostream>
#include <map>
#include <vector>
std::ostream &operator<<(std::ostream &os, std::vector<std::pair<int, int>> &v) {
for (auto &p : v) {
auto sum = p.first + p.second;
auto prod = p.first * p.second;
os << '[' << p.first << ", " << p.second << "] S=" <... | import Data.List (intersect)
s1, s2, s3, s4 :: [(Int, Int)]
s1 = [(x, y) | x <- [1 .. 100], y <- [1 .. 100], 1 < x && x < y && x + y < 100]
add, mul :: (Int, Int) -> Int
add (x, y) = x + y
mul (x, y) = x * y
sumEq, mulEq :: (Int, Int) -> [(Int, Int)]
sumEq p = filter (\q -> add q == add p) s1
mulEq p = filter (\q ->... |
Please provide an equivalent version of this C++ code in Haskell. | #include <complex>
#include <math.h>
#include <iostream>
template<class Type>
struct Precision
{
public:
static Type GetEps()
{
return eps;
}
static void SetEps(Type e)
{
eps = e;
}
private:
static Type eps;
};
template<class Type> Type Precision<Type>::eps = static_cast<Type>(1E-7);
template<class DigT... | import Data.Decimal
import Data.Ratio
import Data.Complex
|
Transform the following C++ implementation into Haskell, maintaining the same output and logic. | #include <fstream>
#include <iostream>
#include <numeric>
#include <unistd.h>
#include <vector>
std::vector<size_t> get_cpu_times() {
std::ifstream proc_stat("/proc/stat");
proc_stat.ignore(5, ' ');
std::vector<size_t> times;
for (size_t time; proc_stat >> time; times.push_back(time));
return time... | import Data.List ( (!!) )
splitString :: Char -> String -> [String]
splitString c [] = []
splitString c s = let ( item , rest ) = break ( == c ) s
( _ , next ) = break ( /= c ) rest
in item : splitString c next
computeUsage :: String -> Double
computeUsage s = (1.0 - ((lineElements ... |
Port the provided C++ code into Haskell while preserving the original functionality. | #include <algorithm>
#include <chrono>
#include <iostream>
#include <vector>
int ulam(int n) {
std::vector<int> ulams{1, 2};
std::vector<int> sieve{1, 1};
for (int u = 2; ulams.size() < n; ) {
sieve.resize(u + ulams[ulams.size() - 2], 0);
for (int i = 0; i < ulams.size() - 1; ++i)
... | import Data.List
ulam
:: Integral i =>
Int -> i
ulam 1 = 1
ulam 2 = 2
ulam n
| n > 2 = ulams !! (n-1)
ulams
:: Integral n =>
[n]
ulams = 1:2:(nexts [2,1])
nexts us = u: (nexts (u:us))
where
n = length us
[u] = head . filter isSingleton . group . sort $
[v | i <- [0 .. n-2], j ... |
Convert this C++ snippet to Haskell and keep its semantics consistent. | #include <iostream>
#include <iomanip>
#include <string>
#include <gmpxx.h>
std::string smallest_six(unsigned int n) {
mpz_class pow = 1;
std::string goal = std::to_string(n);
while (pow.get_str().find(goal) == std::string::npos) {
pow *= 6;
}
return pow.get_str();
}
int main() {... | import Data.List (find, isInfixOf)
import Text.Printf (printf)
smallest :: Integer -> Integer
smallest n = d
where
Just d = find ((show n `isInfixOf`) . show) sixes
sixes :: [Integer]
sixes = iterate (* 6) 1
main :: IO ()
main =
putStr $
[0 .. 21] >>= printf "%2d: %d\n" <*> smallest
|
Convert the following code from C++ to Haskell, ensuring the logic remains intact. | #include <iostream>
using namespace std;
bool steady(int n) {
int mask = 1;
for (int d = n; d != 0; d /= 10)
mask *= 10;
return (n * n) % mask == n;
}
int main() {
for (int i = 1; i < 10000; i++)
if (steady(i)) printf("%4d^2 = %8d\n", i, i * i);
}
| import Control.Monad (join)
import Data.List (isSuffixOf)
p :: Int -> Bool
p = isSuffixOf . show <*> (show . join (*))
main :: IO ()
main =
print $
takeWhile (< 10000) $ filter p [0 ..]
|
Port the provided C++ code into Haskell while preserving the original functionality. | #include <algorithm>
#include <iostream>
#include <iterator>
#include <locale>
#include <vector>
#include "prime_sieve.hpp"
const int limit1 = 1000000;
const int limit2 = 10000000;
class prime_info {
public:
explicit prime_info(int max) : max_print(max) {}
void add_prime(int prime);
void print(std::ostrea... | import Text.Printf (printf)
import Data.Numbers.Primes (isPrime, primes)
main = do
printf "First 35 safe primes: %s\n" (show $ take 35 safe)
printf "There are %d safe primes below 100,000.\n" (length $ takeWhile (<1000000) safe)
printf "There are %d safe primes below 10,000,000.\n\n" (length $ takeWhile (<10000... |
Transform the following C++ implementation into Haskell, maintaining the same output and logic. | #include <iostream>
#include <string>
#include <vector>
#include <unordered_map>
using tab_t = std::vector<std::vector<std::string>>;
tab_t tab1 {
{"27", "Jonah"}
, {"18", "Alan"}
, {"28", "Glory"}
, {"18", "Popeye"}
, {"28", "Alan"}
};
tab_t tab2 {
{"Jonah", "Whales"}
, {"Jonah", "Spiders"}
, {"Alan", "Ghosts"... |
import qualified Data.HashTable.ST.Basic as H
import Data.Hashable
import Control.Monad.ST
import Control.Monad
import Data.STRef
hashJoin :: (Eq k, Hashable k) =>
[t] -> (t -> k) -> [a] -> (a -> k) -> [(t, a)]
hashJoin xs fx ys fy = runST $ do
l <- newSTRef []
ht <- H.new
forM_ ys $ \y -> H.insert ... |
Write a version of this C++ function in Haskell with identical behavior. | #include <iostream>
bool is_giuga(unsigned int n) {
unsigned int m = n / 2;
auto test_factor = [&m, n](unsigned int p) -> bool {
if (m % p != 0)
return true;
m /= p;
return m % p != 0 && (n / p - 1) % p == 0;
};
if (!test_factor(3) || !test_factor(5))
return... |
primeFactors :: Int -> [Int]
primeFactors n = snd $ until ( (== 1) . fst ) step (n , [] )
where
step :: (Int , [Int] ) -> (Int , [Int] )
step (n , li) = ( div n h , li ++ [h] )
where
h :: Int
h = head $ tail $ divisors n
divisors :: Int -> [Int]
divisors n = [d | d <- [1 .. n] , mod n d == 0]
isGiu... |
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <algorithm>
#include <cstdlib>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <string>
#include <vector>
int main() {
std::vector<std::string> words;
std::ifstream in("words.txt");
if (!in) {
std::cerr << "Cannot open file words.txt.\n";
return EXIT_FAILURE;
... | import qualified Data.Set as S
import qualified Data.Text as T
import qualified Data.Text.IO as TIO
anadromes :: [T.Text] -> [(T.Text, T.Text)]
anadromes ws = let set = S.fromList $ map T.toLower ws
in S.foldr (step set) [] set
where step set w ps = let rev = T.reverse w
in if... |
Maintain the same structure and functionality when rewriting this code in Haskell. | #include <gmpxx.h>
#include <algorithm>
#include <cassert>
#include <functional>
#include <iostream>
#include <vector>
using big_int = mpz_class;
const unsigned int small_primes[] = {2, 3, 5, 7, 11, 13, 17, 19, 23,
29, 31, 37, 41, 43, 47, 53, 59, 61,
... | primesTo100 = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97]
find2km :: Integral a => a -> (Int,a)
find2km n = f 0 n
where f k m
| r == 1 = (k,m)
| otherwise = f (k+1) q
where (q,r) = quotRem m 2
millerRabinPrimality :: Integer -> Integer -> Bool
miller... |
Convert this C++ snippet to Haskell and keep its semantics consistent. | #include <iostream>
#include <ratio>
#include <array>
#include <algorithm>
#include <random>
typedef short int Digit;
constexpr Digit nDigits{4};
constexpr Digit maximumDigit{9};
constexpr short int gameGoal{24};
typedef std::array<Digit, nDigits> digitSet;
digitSet d;
void printTrivialOperation(std::... | import Data.List
import Data.Ratio
import Control.Monad
import System.Environment (getArgs)
data Expr = Constant Rational |
Expr :+ Expr | Expr :- Expr |
Expr :* Expr | Expr :/ Expr
deriving (Eq)
ops = [(:+), (:-), (:*), (:/)]
instance Show Expr where
show (Constant x) = show $ numerator x
... |
Convert this C++ block to Haskell, preserving its control flow and logic. | #include <iostream>
#include <ratio>
#include <array>
#include <algorithm>
#include <random>
typedef short int Digit;
constexpr Digit nDigits{4};
constexpr Digit maximumDigit{9};
constexpr short int gameGoal{24};
typedef std::array<Digit, nDigits> digitSet;
digitSet d;
void printTrivialOperation(std::... | import Data.List
import Data.Ratio
import Control.Monad
import System.Environment (getArgs)
data Expr = Constant Rational |
Expr :+ Expr | Expr :- Expr |
Expr :* Expr | Expr :/ Expr
deriving (Eq)
ops = [(:+), (:-), (:*), (:/)]
instance Show Expr where
show (Constant x) = show $ numerator x
... |
Translate the given C++ code snippet into Haskell without altering its behavior. | #include <iostream>
#include <list>
int main ()
{
std::list<int> numbers {1, 5, 7, 0, 3, 2};
numbers.insert(numbers.begin(), 9);
numbers.insert(numbers.end(), 4);
auto it = std::next(numbers.begin(), numbers.size() / 2);
numbers.insert(it, 6);
for(const auto& i: numbers)
std::cout <... | import qualified Data.Map as M
type NodeID = Maybe Rational
data Node a = Node
{vNode :: a,
pNode, nNode :: NodeID}
type DLList a = M.Map Rational (Node a)
empty = M.empty
singleton a = M.singleton 0 $ Node a Nothing Nothing
fcons :: a -> DLList a -> DLList a
fcons a list | M.null list = singleton a
... |
Write the same algorithm in Haskell as shown in this C++ implementation. | #include <iostream>
#include <stack>
#include <string>
#include <sstream>
#include <vector>
struct var {
char name;
bool value;
};
std::vector<var> vars;
template<typename T>
T pop(std::stack<T> &s) {
auto v = s.top();
s.pop();
return v;
}
bool is_operator(char c) {
return c == '&' || c == '|... | import Control.Monad (mapM, foldM, forever)
import Data.List (unwords, unlines, nub)
import Data.Maybe (fromJust)
truthTable expr = let
tokens = words expr
operators = ["&", "|", "!", "^", "=>"]
variables = nub $ filter (not . (`elem` operators)) tokens
table = zip variables <$> mapM (const [True,False... |
Port the following code from C++ to Haskell with equivalent syntax and logic. | #include <iostream>
#include <stack>
#include <string>
#include <sstream>
#include <vector>
struct var {
char name;
bool value;
};
std::vector<var> vars;
template<typename T>
T pop(std::stack<T> &s) {
auto v = s.top();
s.pop();
return v;
}
bool is_operator(char c) {
return c == '&' || c == '|... | import Control.Monad (mapM, foldM, forever)
import Data.List (unwords, unlines, nub)
import Data.Maybe (fromJust)
truthTable expr = let
tokens = words expr
operators = ["&", "|", "!", "^", "=>"]
variables = nub $ filter (not . (`elem` operators)) tokens
table = zip variables <$> mapM (const [True,False... |
Write a version of this C++ function in Haskell with identical behavior. | #include <cassert>
#include <functional>
#include <iostream>
#define _USE_MATH_DEFINES
#include <math.h>
enum RangeType {
CLOSED,
BOTH_OPEN,
LEFT_OPEN,
RIGHT_OPEN
};
class RealSet {
private:
double low, high;
double interval = 0.00001;
std::function<bool(double)> predicate;
public:
R... |
import Data.List
import Data.Maybe
data BracketType = OpenSub | ClosedSub
deriving (Show, Enum, Eq, Ord)
data RealInterval = RealInterval {left :: BracketType, right :: BracketType,
lowerBound :: Double, upperBound :: Double}
deriving (Eq)
type RealSet = [RealInterval]
posInf = 1.0/0.0 :: Double
negI... |
Convert this C++ snippet to Haskell and keep its semantics consistent. | #include <cassert>
#include <functional>
#include <iostream>
#define _USE_MATH_DEFINES
#include <math.h>
enum RangeType {
CLOSED,
BOTH_OPEN,
LEFT_OPEN,
RIGHT_OPEN
};
class RealSet {
private:
double low, high;
double interval = 0.00001;
std::function<bool(double)> predicate;
public:
R... |
import Data.List
import Data.Maybe
data BracketType = OpenSub | ClosedSub
deriving (Show, Enum, Eq, Ord)
data RealInterval = RealInterval {left :: BracketType, right :: BracketType,
lowerBound :: Double, upperBound :: Double}
deriving (Eq)
type RealSet = [RealInterval]
posInf = 1.0/0.0 :: Double
negI... |
Port the provided C++ code into Haskell while preserving the original functionality. | #include <algorithm>
#include <iostream>
#include <string>
#include <array>
#include <vector>
template<typename T>
T unique(T&& src)
{
T retval(std::move(src));
std::sort(retval.begin(), retval.end(), std::less<typename T::value_type>());
retval.erase(std::unique(retval.begin(), retval.end()), retval.end()... |
import Data.Char (isLetter, toLower)
import Data.Function (on)
import Data.List (groupBy, nub, sort, sortBy)
puzzle :: [String] -> [((String, String), (String, String))]
puzzle states =
concatMap
((filter isValid . pairs) . map snd)
( filter ((> 1) . length) $
groupBy ((==) `on` fst) $
... |
Keep all operations the same but rewrite the snippet in Haskell. | #include <iostream>
#include <sstream>
#include <vector>
uint64_t ipow(uint64_t base, uint64_t exp) {
uint64_t result = 1;
while (exp) {
if (exp & 1) {
result *= base;
}
exp >>= 1;
base *= base;
}
return result;
}
int main() {
using namespace std;
v... | import Data.List (isInfixOf)
import Data.Char (intToDigit)
isSuperd :: (Show a, Integral a) => a -> a -> Bool
isSuperd p n =
(replicate <*> intToDigit) (fromIntegral p) `isInfixOf` show (p * n ^ p)
findSuperd :: (Show a, Integral a) => a -> [a]
findSuperd p = filter (isSuperd p) [1 ..]
main :: IO ()
main =
mapM_... |
Port the following code from C++ to Haskell with equivalent syntax and logic. | #include <iostream>
#include <sstream>
#include <vector>
uint64_t ipow(uint64_t base, uint64_t exp) {
uint64_t result = 1;
while (exp) {
if (exp & 1) {
result *= base;
}
exp >>= 1;
base *= base;
}
return result;
}
int main() {
using namespace std;
v... | import Data.List (isInfixOf)
import Data.Char (intToDigit)
isSuperd :: (Show a, Integral a) => a -> a -> Bool
isSuperd p n =
(replicate <*> intToDigit) (fromIntegral p) `isInfixOf` show (p * n ^ p)
findSuperd :: (Show a, Integral a) => a -> [a]
findSuperd p = filter (isSuperd p) [1 ..]
main :: IO ()
main =
mapM_... |
Translate the given C++ code snippet into Haskell without altering its behavior. | #include <iostream>
#include <map>
#include <cmath>
int pRec(int n) {
static std::map<int,int> memo;
auto it = memo.find(n);
if (it != memo.end()) return it->second;
if (n <= 2) memo[n] = 1;
else memo[n] = pRec(n-2) + pRec(n-3);
return memo[n];
}
int pFloor(int n) {
long const double ... |
pRec = map (\(a,_,_) -> a) $ iterate (\(a,b,c) -> (b,c,a+b)) (1,1,1)
pSelfRef = 1 : 1 : 1 : zipWith (+) pSelfRef (tail pSelfRef)
pFloor = map f [0..]
where f n = floor $ p**fromInteger (pred n) / s + 0.5
p = 1.324717957244746025960908854
s = 1.0453567932525329623
lSystem = ... |
Maintain the same structure and functionality when rewriting this code in Haskell. | #include <iostream>
#include <cmath>
#include <optional>
#include <vector>
using namespace std;
template <typename T>
auto operator>>(const optional<T>& monad, auto f)
{
if(!monad.has_value())
{
return optional<remove_reference_t<decltype(*f(*monad))>>();
}
return f(*monad)... | main = do print $ Just 3 >>= (return . (*2)) >>= (return . (+1))
print $ Nothing >>= (return . (*2)) >>= (return . (+1))
|
Ensure the translated Haskell code behaves exactly like the original C++ snippet. | #include <iostream>
#include <vector>
using namespace std;
template <typename T>
auto operator>>(const vector<T>& monad, auto f)
{
vector<remove_reference_t<decltype(f(monad.front()).front())>> result;
for(auto& item : monad)
{
const auto r = f(item);
resul... | main = print $ [3,4,5] >>= (return . (+1)) >>= (return . (*2))
|
Rewrite the snippet below in Haskell so it works the same as the original C++ code. | #include <fstream>
#include <iostream>
#include <unordered_map>
#include <vector>
struct Textonym_Checker {
private:
int total;
int elements;
int textonyms;
int max_found;
std::vector<std::string> max_strings;
std::unordered_map<std::string, std::vector<std::string>> values;
int get_mappin... | import Data.Char (toUpper)
import Data.Function (on)
import Data.List (groupBy, sortBy)
import Data.Maybe (fromMaybe, isJust, isNothing)
toKey :: Char -> Maybe Char
toKey ch
| ch < 'A' = Nothing
| ch < 'D' = Just '2'
| ch < 'G' = Just '3'
| ch < 'J' = Just '4'
| ch < 'M' = Just '5'
| ch < 'P' = Just '6'
... |
Generate a Haskell translation of this C++ snippet without changing its computational steps. | #include <iostream>
auto Zero = [](auto){ return [](auto x){ return x; }; };
auto True = [](auto a){ return [=](auto){ return a; }; };
auto False = [](auto){ return [](auto b){ return b; }; };
auto Successor(auto a) {
return [=](auto f) {
return [=](auto x) {
return a(f)(f(x));
};
... | import Unsafe.Coerce ( unsafeCoerce )
type Church a = (a -> a) -> a -> a
churchZero :: Church a
churchZero = const id
churchOne :: Church a
churchOne = id
succChurch :: Church a -> Church a
succChurch = (<*>) (.)
addChurch :: Church a -> Church a -> Church a
addChurch = (<*>). fmap (.)
multChurch :: Church a -... |
Change the following C++ code into Haskell without altering its purpose. | #include <iostream>
auto Zero = [](auto){ return [](auto x){ return x; }; };
auto True = [](auto a){ return [=](auto){ return a; }; };
auto False = [](auto){ return [](auto b){ return b; }; };
auto Successor(auto a) {
return [=](auto f) {
return [=](auto x) {
return a(f)(f(x));
};
... | import Unsafe.Coerce ( unsafeCoerce )
type Church a = (a -> a) -> a -> a
churchZero :: Church a
churchZero = const id
churchOne :: Church a
churchOne = id
succChurch :: Church a -> Church a
succChurch = (<*>) (.)
addChurch :: Church a -> Church a -> Church a
addChurch = (<*>). fmap (.)
multChurch :: Church a -... |
Translate this program into Haskell but keep the logic exactly as in C++. | #include <cstdint>
#include <iomanip>
#include <iostream>
#include <sstream>
class ipv4_cidr {
public:
ipv4_cidr() {}
ipv4_cidr(std::uint32_t address, unsigned int mask_length)
: address_(address), mask_length_(mask_length) {}
std::uint32_t address() const {
return address_;
}
unsi... | import Control.Monad (guard)
import Data.Bits ((.|.), (.&.), complement, shiftL, shiftR, zeroBits)
import Data.Maybe (listToMaybe)
import Data.Word (Word32, Word8)
import Text.ParserCombinators.ReadP (ReadP, char, readP_to_S)
import Text.Printf (printf)
import Text.Read.Lex (readDecP)
data CIDR = CIDR Word32 Word8
... |
Write the same code in Haskell as shown below in C++. | #include <cstdint>
#include <iomanip>
#include <iostream>
#include <sstream>
class ipv4_cidr {
public:
ipv4_cidr() {}
ipv4_cidr(std::uint32_t address, unsigned int mask_length)
: address_(address), mask_length_(mask_length) {}
std::uint32_t address() const {
return address_;
}
unsi... | import Control.Monad (guard)
import Data.Bits ((.|.), (.&.), complement, shiftL, shiftR, zeroBits)
import Data.Maybe (listToMaybe)
import Data.Word (Word32, Word8)
import Text.ParserCombinators.ReadP (ReadP, char, readP_to_S)
import Text.Printf (printf)
import Text.Read.Lex (readDecP)
data CIDR = CIDR Word32 Word8
... |
Convert this C++ snippet to Haskell and keep its semantics consistent. | #include <cstdint>
#include <iostream>
#include <sstream>
#include <gmpxx.h>
typedef mpz_class integer;
bool is_probably_prime(const integer& n) {
return mpz_probab_prime_p(n.get_mpz_t(), 25) != 0;
}
bool is_prime(unsigned int n) {
if (n < 2)
return false;
if (n % 2 == 0)
return n == 2;
... | import Data.List (scanl1, elemIndices, nub)
primes :: [Integer]
primes = 2 : filter isPrime [3,5 ..]
isPrime :: Integer -> Bool
isPrime = isPrime_ primes
where
isPrime_ :: [Integer] -> Integer -> Bool
isPrime_ (p:ps) n
| p * p > n = True
| n `mod` p == 0 = False
| otherwise = isPrime_ ps n... |
Rewrite the snippet below in Haskell so it works the same as the original C++ code. | #include <boost/multiprecision/gmp.hpp>
#include <iostream>
using namespace boost::multiprecision;
mpz_int p(uint n, uint p) {
mpz_int r = 1;
mpz_int k = n - p;
while (n > k)
r *= n--;
return r;
}
mpz_int c(uint n, uint k) {
mpz_int r = p(n, k);
while (k)
r /= k--;
return ... | perm :: Integer -> Integer -> Integer
perm n k = product [n-k+1..n]
comb :: Integer -> Integer -> Integer
comb n k = perm n k `div` product [1..k]
main :: IO ()
main = do
let showBig maxlen b =
let st = show b
stlen = length st
in if stlen < maxlen then st e... |
Maintain the same structure and functionality when rewriting this code in Haskell. | #include <gmpxx.h>
#include <chrono>
using namespace std;
using namespace chrono;
void agm(mpf_class& rop1, mpf_class& rop2, const mpf_class& op1,
const mpf_class& op2)
{
rop1 = (op1 + op2) / 2;
rop2 = op1 * op2;
mpf_sqrt(rop2.get_mpf_t(), rop2.get_mpf_t());
}
int main(void)
{
auto st = ste... | import Prelude hiding (pi)
import Data.Number.MPFR hiding (sqrt, pi, div)
import Data.Number.MPFR.Instances.Near ()
digitBits :: (Integral a, Num a) => a -> a
digitBits n = (n + 1) `div` 2 * 8
pi :: Integer -> MPFR
pi digits =
let eps = fromString ("1e-" ++ show digits)
(fromInteger $ digitBits digit... |
Rewrite the snippet below in Haskell so it works the same as the original C++ code. | #include <gmpxx.h>
#include <chrono>
using namespace std;
using namespace chrono;
void agm(mpf_class& rop1, mpf_class& rop2, const mpf_class& op1,
const mpf_class& op2)
{
rop1 = (op1 + op2) / 2;
rop2 = op1 * op2;
mpf_sqrt(rop2.get_mpf_t(), rop2.get_mpf_t());
}
int main(void)
{
auto st = ste... | import Prelude hiding (pi)
import Data.Number.MPFR hiding (sqrt, pi, div)
import Data.Number.MPFR.Instances.Near ()
digitBits :: (Integral a, Num a) => a -> a
digitBits n = (n + 1) `div` 2 * 8
pi :: Integer -> MPFR
pi digits =
let eps = fromString ("1e-" ++ show digits)
(fromInteger $ digitBits digit... |
Convert this C++ block to Haskell, preserving its control flow and logic. | #include <iomanip>
#include <iostream>
#include <list>
using namespace std;
void sieve(int limit, list<int> &primes)
{
bool *c = new bool[limit + 1];
for (int i = 0; i <= limit; i++)
c[i] = false;
int p = 3, n = 0;
int p2 = p * p;
while (p2 <= limit)
{
for (int i = p2; i <= limit; i += 2 * p)
... | import Data.List (elemIndex)
longPrimesUpTo :: Int -> [Int]
longPrimesUpTo n =
filter isLongPrime $
takeWhile (< n) primes
where
sieve (p : xs) = p : sieve [x | x <- xs, x `mod` p /= 0]
primes = sieve [2 ..]
isLongPrime n = found
where
cycles = take n (iterate ((`mod` n) . (10 *)) 1)
... |
Write the same algorithm in Haskell as shown in this C++ implementation. | using System;
class Program {
static int l;
static int[] gp(int n) {
var c = new bool[n]; var r = new int[(int)(1.28 * n)];
l = 0; r[l++] = 2; r[l++] = 3; int j, d, lim = (int)Math.Sqrt(n);
for (int i = 9; i < n; i += 6) c[i] = true;
for (j = 5, d = 4; j < lim; j += (d = 6 - ... | import Control.Arrow ((&&&))
import Data.List (scanl1, foldl1')
getNthPrimorial :: Int -> Integer
getNthPrimorial n = foldl1' (*) (take n primes)
primes :: [Integer]
primes = 2 : filter isPrime [3,5..]
isPrime :: Integer -> Bool
isPrime = isPrime_ primes
where isPrime_ :: [Integer] -> Integer -> Bool
isPri... |
Can you help me rewrite this code in Haskell instead of C++, keeping it the same logically? | #include <iostream>
#include <optional>
#include <vector>
#include <string>
#include <sstream>
#include <boost/multiprecision/cpp_int.hpp>
typedef boost::multiprecision::cpp_int integer;
struct fraction {
fraction(const integer& n, const integer& d) : numerator(n), denominator(d) {}
integer numerator;
int... | import Data.Ratio (Ratio, (%), denominator, numerator)
egyptianFraction :: Integral a => Ratio a -> [Ratio a]
egyptianFraction n
| n < 0 = map negate (egyptianFraction (-n))
| n == 0 = []
| x == 1 = [n]
| x > y = (x `div` y % 1) : egyptianFraction (x `mod` y % y)
| otherwise = (1 % r) : egyptianFraction ((-y... |
Preserve the algorithm and functionality while converting the code from C++ to Haskell. | #include <iostream>
#include <optional>
#include <vector>
#include <string>
#include <sstream>
#include <boost/multiprecision/cpp_int.hpp>
typedef boost::multiprecision::cpp_int integer;
struct fraction {
fraction(const integer& n, const integer& d) : numerator(n), denominator(d) {}
integer numerator;
int... | import Data.Ratio (Ratio, (%), denominator, numerator)
egyptianFraction :: Integral a => Ratio a -> [Ratio a]
egyptianFraction n
| n < 0 = map negate (egyptianFraction (-n))
| n == 0 = []
| x == 1 = [n]
| x > y = (x `div` y % 1) : egyptianFraction (x `mod` y % y)
| otherwise = (1 % r) : egyptianFraction ((-y... |
Rewrite the snippet below in Haskell so it works the same as the original C++ code. | #include <iostream>
#include <iomanip>
#include <cmath>
namespace Rosetta {
template <int N>
class GaussLegendreQuadrature {
public:
enum {eDEGREE = N};
template <typename Function>
double integrate(double a, double b, Function f) {
double p = (b - a) / 2... | gaussLegendre n f a b = d*sum [ w x*f(m + d*x) | x <- roots ]
where d = (b - a)/2
m = (b + a)/2
w x = 2/(1-x^2)/(legendreP' n x)^2
roots = map (findRoot (legendreP n) (legendreP' n) . x0) [1..n]
x0 i = cos (pi*(i-1/4)/(n+1/2))
|
Write the same algorithm in Haskell as shown in this C++ implementation. | #include <algorithm>
#include <array>
#include <cmath>
#include <iostream>
#include <random>
#include <vector>
template<typename coordinate_type, size_t dimensions>
class point {
public:
point(std::array<coordinate_type, dimensions> c) : coords_(c) {}
point(std::initializer_list<coordinate_type> list) {
... | import System.Random
import Data.List (sortBy, genericLength, minimumBy)
import Data.Ord (comparing)
type DimensionalAccessors a b = [a -> b]
data Tree a = Node a (Tree a) (Tree a)
| Empty
instance Show a => Show (Tree a) where
show Empty = "Empty"
show (Node value left right) =
"(" ++ show va... |
Change the following C++ code into Haskell without altering its purpose. | #include <algorithm>
#include <array>
#include <cmath>
#include <iostream>
#include <random>
#include <vector>
template<typename coordinate_type, size_t dimensions>
class point {
public:
point(std::array<coordinate_type, dimensions> c) : coords_(c) {}
point(std::initializer_list<coordinate_type> list) {
... | import System.Random
import Data.List (sortBy, genericLength, minimumBy)
import Data.Ord (comparing)
type DimensionalAccessors a b = [a -> b]
data Tree a = Node a (Tree a) (Tree a)
| Empty
instance Show a => Show (Tree a) where
show Empty = "Empty"
show (Node value left right) =
"(" ++ show va... |
Convert this C++ snippet to Haskell and keep its semantics consistent. | #include <array>
#include <iostream>
#include <stack>
#include <vector>
const std::array<std::pair<int, int>, 4> DIRS = {
std::make_pair(0, -1),
std::make_pair(-1, 0),
std::make_pair(0, 1),
std::make_pair(1, 0),
};
void printResult(const std::vector<std::vector<int>> &v) {
for (auto &row : v) {... | import qualified Data.Vector.Unboxed.Mutable as V
import Data.STRef
import Control.Monad (forM_, when)
import Control.Monad.ST
dir :: [(Int, Int)]
dir = [(1, 0), (-1, 0), (0, -1), (0, 1)]
data Env = Env { w, h, len, count, ret :: !Int, next :: ![Int] }
cutIt :: STRef s Env -> ST s ()
cutIt env = do
e <- readSTRe... |
Convert this C++ block to Haskell, preserving its control flow and logic. | #include <array>
#include <iostream>
#include <stack>
#include <vector>
const std::array<std::pair<int, int>, 4> DIRS = {
std::make_pair(0, -1),
std::make_pair(-1, 0),
std::make_pair(0, 1),
std::make_pair(1, 0),
};
void printResult(const std::vector<std::vector<int>> &v) {
for (auto &row : v) {... | import qualified Data.Vector.Unboxed.Mutable as V
import Data.STRef
import Control.Monad (forM_, when)
import Control.Monad.ST
dir :: [(Int, Int)]
dir = [(1, 0), (-1, 0), (0, -1), (0, 1)]
data Env = Env { w, h, len, count, ret :: !Int, next :: ![Int] }
cutIt :: STRef s Env -> ST s ()
cutIt env = do
e <- readSTRe... |
Transform the following C++ implementation into Haskell, maintaining the same output and logic. | #include <iostream>
#include <vector>
#include <chrono>
#include <climits>
#include <cmath>
using namespace std;
vector <long long> primes{ 3, 5 };
int main()
{
cout.imbue(locale(""));
const int cutOff = 200, bigUn = 100000,
chunks = 50, little = bigUn / chunks;
const char tn[] = " cuban prime";
... | import Data.Numbers.Primes (isPrime)
import Data.List (intercalate)
import Data.List.Split (chunksOf)
import Text.Printf (printf)
cubans :: [Int]
cubans = filter isPrime . map (\x -> (succ x ^ 3) - (x ^ 3)) $ [1 ..]
main :: IO ()
main = do
mapM_ (\row -> mapM_ (printf "%10s" . thousands) row >> printf "\n") $ rows ... |
Port the following code from C++ to Haskell with equivalent syntax and logic. | #include <windows.h>
#include <ctime>
#include <string>
#include <iostream>
const int BMP_SIZE = 600;
class myBitmap {
public:
myBitmap() : pen( NULL ), brush( NULL ), clr( 0 ), wid( 1 ) {}
~myBitmap() {
DeleteObject( pen ); DeleteObject( brush );
DeleteDC( hdc ); DeleteObject( bmp );
}
... | import Control.Monad (replicateM)
import Control.Monad.Random (fromList)
type Point = (Float,Float)
type Transformations = [(Point -> Point, Float)]
gameOfChaos :: MonadRandom m => Int -> Transformations -> Point -> m [Point]
gameOfChaos n transformations x = iterateA (fromList transformations) x
where iterateA f... |
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