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Kumite (ko͞omiˌtā) is the practice of taking techniques learned from Kata and applying them through the act of freestyle sparring.

You can create a new kumite by providing some initial code and optionally some test cases. From there other warriors can spar with you, by enhancing, refactoring and translating your code. There is no limit to how many warriors you can spar with.

A great use for kumite is to begin an idea for a kata as one. You can collaborate with other code warriors until you have it right, then you can convert it to a kata.

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pearcebasmanmvs.aaronkciminelli

Phrase Password Generator

Code
Diff
  • use rand::prelude::*;

const SPECIAL_CHARACTERS: [char; 39] = [
    '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
    '!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
    '.', ',', ':', ';', '<', '>', '?', '+', '-', '=',
    '/', '\\', '\'', '"', '{', '}', '[', ']', '_'
];

fn password_from_phrase(phrase: &str) -> String {
    let mut rng = rand::thread_rng();
    let mut phrase: Vec<_> = phrase
        .chars()
        .filter(|c| c.is_ascii_alphabetic())
        .map(|c| c.to_ascii_lowercase())
        .collect();
    phrase.shuffle(&mut rng);
    phrase.into_iter()
        .chain((0..10).map(|_| *SPECIAL_CHARACTERS.choose(&mut rng).unwrap()))
        .collect()
}
    • import random
    • import string
    • def password_from_phrase(phrase):
    • # Remove any non-alphabetic characters and convert to lowercase
    • phrase = ''.join(filter(str.isalpha, phrase)).lower()
    • # Shuffle the characters in the phrase
    • phrase_chars = list(phrase)
    • random.shuffle(phrase_chars)
    • shuffled_phrase = ''.join(phrase_chars)
    • # Generate a random string of numbers and symbols
    • num_symbols = random.randint(6, 10)
    • symbols = ''.join(random.choices(string.punctuation, k=num_symbols))
    • # Combine the shuffled phrase and symbols to form the password
    • password = shuffled_phrase[:6] + symbols + shuffled_phrase[6:]
    • return password
    • use rand::prelude::*;
    • const SPECIAL_CHARACTERS: [char; 39] = [
    • '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
    • '!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
    • '.', ',', ':', ';', '<', '>', '?', '+', '-', '=',
    • '/', '\\', '\'', '"', '{', '}', '[', ']', '_'
    • ];
    • fn password_from_phrase(phrase: &str) -> String {
    • let mut rng = rand::thread_rng();
    • let mut phrase: Vec<_> = phrase
    • .chars()
    • .filter(|c| c.is_ascii_alphabetic())
    • .map(|c| c.to_ascii_lowercase())
    • .collect();
    • phrase.shuffle(&mut rng);
    • phrase.into_iter()
    • .chain((0..10).map(|_| *SPECIAL_CHARACTERS.choose(&mut rng).unwrap()))
    • .collect()
    • }
Darkzosvs.kingrishabh16

Hello world

Write a function that returns "Hello World baby" if its true and "No World" if its false

Code
Diff
  • /*def hello_world(world):
    if world == True:
        return "Hello World baby"
    elif world == False:
        return "No World"*/

// helloWorld = (world) => world == true ? 'Hello World baby': 'No World';

const helloWorld=(world)=>world ?`Hello World baby`:`No World`;
    • /*def hello_world(world):
    • if world == True:
    • return "Hello World baby"
    • elif world == False:
    • return "No World"*/
    • // helloWorld = (world) => world == true ? 'Hello World baby': 'No World';
    • const helloWorld=(world)=>world==true?`Hello World baby`:`No World`;
    • const helloWorld=(world)=>world ?`Hello World baby`:`No World`;
pearcebasmanmvs.programutox

Vector multiply

Code
Diff
  • fn vector_multiply(input: &[i32]) -> i32 {
    input.iter().product()
}
    • fn vector_multiply(input: Vec<i32>) -> i32 {
    • input.iter()
    • .product()
    • fn vector_multiply(input: &[i32]) -> i32 {
    • input.iter().product()
    • }
pearcebasmanmvs.alex.qm

Cryptography in Characters

Strings
Ciphers
Fundamentals
Cryptography
Algorithms
Code
Diff
  • fn encode(phrase: &str, key: &str) -> String {
    apply_modifier(phrase, key, |(character, offset)| character + offset)
}

fn decode(phrase: &str, key: &str) -> String {
    apply_modifier(phrase, key, |(character, offset)| character - offset)
}

fn apply_modifier(phrase: &str, key: &str, f: fn((u8, u8)) -> u8) -> String {
    phrase.chars()
        .map(normalize) // 'A'..='Z' and 'a'..='z' to 0..26 and 26..52
        .map(|n| n + 52) // 0..52 to 52..104 so that subtraction doesn't overflow
        .zip(offsets(key).into_iter().cycle()) // generate and cycle over the offsets
        .map(|n| f(n) % 52) // apply encoding/decoding and remainder it back to 0..52
        .map(denormalize) // 0..26 and 26..52 to 'A'..='Z' and 'a'..='z'
        .collect()
}

fn normalize(character: char) -> u8 {
    character as u8 - if character.is_ascii_uppercase() { b'A' } else { b'a' - 26 }
}

fn denormalize(normalized: u8) -> char {
    (normalized + if normalized < 26 { b'A' } else { b'a' - 26 }) as char
}

fn offsets(key: &str) -> Vec<u8> {
    let key_len = key.len() as u8;
    let offsets: Vec<_> = key.chars().map(move |ch| ch as u8 % 10 + key_len).collect();
    if offsets.is_empty() {
        vec![0]
    } else {
        offsets
    }
}
    • public class Kata {
    • public static String encode(String phrase, String key) {
    • return "";
    • }
    • public static String decode(String phrase, String key) {
    • return "";
    • }
    • fn encode(phrase: &str, key: &str) -> String {
    • apply_modifier(phrase, key, |(character, offset)| character + offset)
    • }
    • fn decode(phrase: &str, key: &str) -> String {
    • apply_modifier(phrase, key, |(character, offset)| character - offset)
    • }
    • fn apply_modifier(phrase: &str, key: &str, f: fn((u8, u8)) -> u8) -> String {
    • phrase.chars()
    • .map(normalize) // 'A'..='Z' and 'a'..='z' to 0..26 and 26..52
    • .map(|n| n + 52) // 0..52 to 52..104 so that subtraction doesn't overflow
    • .zip(offsets(key).into_iter().cycle()) // generate and cycle over the offsets
    • .map(|n| f(n) % 52) // apply encoding/decoding and remainder it back to 0..52
    • .map(denormalize) // 0..26 and 26..52 to 'A'..='Z' and 'a'..='z'
    • .collect()
    • }
    • fn normalize(character: char) -> u8 {
    • character as u8 - if character.is_ascii_uppercase() { b'A' } else { b'a' - 26 }
    • }
    • fn denormalize(normalized: u8) -> char {
    • (normalized + if normalized < 26 { b'A' } else { b'a' - 26 }) as char
    • }
    • fn offsets(key: &str) -> Vec<u8> {
    • let key_len = key.len() as u8;
    • let offsets: Vec<_> = key.chars().map(move |ch| ch as u8 % 10 + key_len).collect();
    • if offsets.is_empty() {
    • vec![0]
    • } else {
    • offsets
    • }
    • }
Bhumika987vs.LIO-prog

Fix the code

Code
Diff
  • def multiply(a,b):
    result = a*b
    return result
print(multiply(5,10))
    • def multiply(a,b):
    • result = a*b
    • return result
    • multiply (5,10)
    • print(multiply(5,10))
pearcebasmanmvs.KlevCC

Height estimator

Code
Diff
  • fn estimate_height(sex: Sex, father_height: f64, mother_height: f64) -> f64 {
    let offset = match sex {
        Sex::Male => 0.5,
        Sex::Female => -0.5
    };
    
    (father_height + mother_height) / 2.0 + offset
}

enum Sex {
    Male,
    Female
}
    • def est_height(gender, dad_height, mom_height):
    • if gender=="boy":
    • return ((dad_height + mom_height)/2)+0.5
    • else:
    • return ((dad_height + mom_height)/2)-0.5
    • fn estimate_height(sex: Sex, father_height: f64, mother_height: f64) -> f64 {
    • let offset = match sex {
    • Sex::Male => 0.5,
    • Sex::Female => -0.5
    • };
    • (father_height + mother_height) / 2.0 + offset
    • }
    • enum Sex {
    • Male,
    • Female
    • }
gusaud3051vs.ksaweryr

Counting Up and Down

Fundamentals
Functional Programming

a haskell code

Code
Diff
  • module NumberPrint where

import Control.Monad         (when)
import Data.IORef            (newIORef)
import Data.StateVar         (($=), ($~), get)
import Foreign.Ptr           (Ptr (..))
import Foreign.Marshal.Alloc (alloca)
import System.IO.Unsafe      (unsafePerformIO)

whileM :: Monad m => m Bool -> m () -> m ()
whileM mb a = do
  b <- mb
  when b $ a >> whileM mb a

numberprint :: Int -> Integer
numberprint n = read . unsafePerformIO $ do 
  alloca $ \(i :: Ptr Int)-> do
    i $= 1
    s <- newIORef ""
    whileM ((<n) <$> get i) $ do
      c <- get i
      s $~ (show c++)
      i $~ (1+)
    whileM ((>= 1) <$> get i) $ do
      c <- get i
      s $~ (show c++)
      i $~ (-1+)
    get s
    • module NumberPrint where
    • import Control.Monad (when)
    • import Data.IORef (newIORef)
    • import Data.StateVar (($=), ($~), get)
    • import Foreign.Ptr (Ptr (..))
    • import Foreign.Marshal.Alloc (alloca)
    • import System.IO.Unsafe (unsafePerformIO)
    • whileM :: Monad m => m Bool -> m () -> m ()
    • whileM mb a = do
    • b <- mb
    • when b $ a >> whileM mb a
    • numberprint :: Int -> Integer
    • numberprint = read . (>>= id) . ((++) <*> (reverse . init)) . (\x -> show <$> [1..x])
    • numberprint n = read . unsafePerformIO $ do
    • alloca $ \(i :: Ptr Int)-> do
    • i $= 1
    • s <- newIORef ""
    • whileM ((<n) <$> get i) $ do
    • c <- get i
    • s $~ (show c++)
    • i $~ (1+)
    • whileM ((>= 1) <$> get i) $ do
    • c <- get i
    • s $~ (show c++)
    • i $~ (-1+)
    • get s