Start a new Kumite
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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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FriedAxonsvs.kieren_mcgill

Check Even Number

Refactor the previous function body to one line.

Code
Diff
  • function isEven(num) {
  return num % 2 === 0 ? true : num % 1 === 0 ? false : undefined;
}
// isEven(2);


// Previous iteration

// isEven = number => number %2 === 0 ? 
//   true: number %1 === 0 ? 
//   false : undefined;
    • isEven = number => number %2 === 0 ?
    • true: number %1 === 0 ?
    • false : undefined;
    • function isEven(num) {
    • return num % 2 === 0 ? true : num % 1 === 0 ? false : undefined;
    • }
    • // isEven(2);
    • // Previous iteration
    • // isEven = number => number %2 === 0 ?
    • // true: number %1 === 0 ?
    • // false : undefined;
cyberninja2004vs.Roua99

double value

Code
Diff
  • #include<iostream>

int doubleValue(int x) {
    return x + x;
}
    • #include<iostream>
    • int doubleValue(int x) {
    • return x * 2;
    • return x + x;
    • }
cyberninja2004vs.televisionia

Area of a Triangle

Code
Diff
  • float AreaOfTriangle(float w, float h) {return (w * h) * 0.5;}
    • float AreaOfTriangle(float w, float h) {return (w * h) / 2;} //Get one-lined
    • float AreaOfTriangle(float w, float h) {return (w * h) * 0.5;}
JamesReichvs.Imunsure

XasanboyAb's Kumite #3

Code
Diff
  • const greet = () => 'Hello World!';
    • function Greet(){return "Hello World!"}
    • const greet = () => 'Hello World!';
MicSawvs.Micheaaa

Ulysses vs. Terrence - Remove every Third Character

Code
Diff
  • const removeEveryThird = str => str[0]+[...str].filter((a,i)=> i%3!==0).join('')
    • function removeEveryThird(str) {
    • return (str[0] || '') + str
    • .slice(1)
    • .replace(/(..)./g, '$1')
    • }
    • const removeEveryThird = str => str[0]+[...str].filter((a,i)=> i%3!==0).join('')
elpidio.netovs.Innoky

TT-test

Code
Diff
  • def hello():
    return "Hello word" #p fix the test code
    • print("Hello", "word") #p fix the cde dumbfuck
    • def hello():
    • return "Hello word" #p fix the test code
AnastasiaOstafiychukvs.eignnx

Are there three

Code
Diff
  • public class Kumite {
  public static bool IsThree(int x) => x.ToString().Contains('3');
}
    • public class Kumite {
    • public static bool IsThree(int x) =>
    • x.ToString().Contains('3');
    • public static bool IsThree(int x) => x.ToString().Contains('3');
    • }
ofthemassesvs.Georgius2

Find Max - Kareona vs. Phoenix

One line reduction method

Code
Diff
  • import java.util.*;

public class Kata {
    public static int findMax(int[] my_array) {return Arrays.stream(my_array).reduce(my_array[0], (x, y) -> x > y ? x : y);}
}
    • import java.util.*;
    • public class Kata {
    • public static int findMax(int[] my_array) {
    • // Write a method that returns the largest integer in the list.
    • // You can assume that the list has at least one element.
    • Arrays.sort(my_array);
    • return (my_array[my_array.length-1]);
    • }
    • public static int findMax(int[] my_array) {return Arrays.stream(my_array).reduce(my_array[0], (x, y) -> x > y ? x : y);}
    • }
mat-jarvs.seraph776

num to str

Dictionary :)

Code
Diff
  • def converter(number):
    dictionary = {
        0: "zero",
        1: "one",
        2: "two",
        3: "three",
        4: "four",
        5: "five",
        6: "six",
        7: "seven",
        8: "eight",
        9: "nine",
        10: 10
    }
    return dictionary[number]
    • def converter(number):
    • match number:
    • case 0:
    • return 'zero'
    • case 1:
    • return 'one'
    • case 2:
    • return 'two'
    • case 3:
    • return 'three'
    • case 4:
    • return 'four'
    • case 5:
    • return 'five'
    • case 6:
    • return 'six'
    • case 7:
    • return 'seven'
    • case 8:
    • return 'eight'
    • case 9:
    • return 'nine'
    • case _:
    • return number
    • dictionary = {
    • 0: "zero",
    • 1: "one",
    • 2: "two",
    • 3: "three",
    • 4: "four",
    • 5: "five",
    • 6: "six",
    • 7: "seven",
    • 8: "eight",
    • 9: "nine",
    • 10: 10
    • }
    • return dictionary[number]