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.
import random from dataclasses import dataclass, field @dataclass class Sheep: color: str = field(init=False) def __post_init__(self): self.color = random.choice(['white', 'black']) @staticmethod def count_sheep(flock): return str(flock).count('white')def count_sheeps(sheeps):return str(sheeps).count('T')- import random
- from dataclasses import dataclass, field
- @dataclass
- class Sheep:
- color: str = field(init=False)
- def __post_init__(self):
- self.color = random.choice(['white', 'black'])
- @staticmethod
- def count_sheep(flock):
- return str(flock).count('white')
import codewars_test as test from solution import Sheep @test.describe("Example") def test_group(): @test.it("test case 1: counting white sheep") def test_case(): for n in range(50): flock = [[Sheep() for sheep in range(100)] for s in range(100)] sample = Sheep().count_sheep(flock) test.assert_equals(sample, str(flock).count('white'))- import codewars_test as test
# TODO Write testsimport solution # or from solution import example- from solution import Sheep
# test.assert_equals(actual, expected, [optional] message)- @test.describe("Example")
- def test_group():
@test.it("test case")- @test.it("test case 1: counting white sheep")
- def test_case():
array1 = [True, True, True, False,True, True, True, True ,True, False, True, False,True, False, False, True ,True, True, True, True ,False, False, True, True]result = count_sheeps(array1)test.assert_equals(result, 17)- for n in range(50):
- flock = [[Sheep() for sheep in range(100)] for s in range(100)]
- sample = Sheep().count_sheep(flock)
- test.assert_equals(sample, str(flock).count('white'))
def give_it_all(n): s = 'abcdefghijklmnopqrstuvwxyz' return ''.join([s[i] for i in range(min(n,26))])function giveItall(n){let a = [];let b = 'abcdefghijklmnopqrstuvwxyz'for(let i = 0; i <= n - 1; i++){a.push(b[i]);}return a;}console.log(giveItall(11));- def give_it_all(n):
- s = 'abcdefghijklmnopqrstuvwxyz'
- return ''.join([s[i] for i in range(min(n,26))])
import codewars_test as test from solution import give_it_all @test.describe("Example") def test_group(): @test.it("test case") def test_case(): test.assert_equals(give_it_all(0), '') test.assert_equals(give_it_all(10), 'abcdefghij') test.assert_equals(give_it_all(15), 'abcdefghijklmno') test.assert_equals(give_it_all(20), 'abcdefghijklmnopqrst') test.assert_equals(give_it_all(25), 'abcdefghijklmnopqrstuvwxy') test.assert_equals(give_it_all(30), 'abcdefghijklmnopqrstuvwxyz') test.assert_equals(give_it_all(-1), '')// Since Node 10, we're using Mocha.// You can use `chai` for assertions.const chai = require("chai");const assert = chai.assert;// Uncomment the following line to disable truncating failure messages for deep equals, do:// chai.config.truncateThreshold = 0;// Since Node 12, we no longer include assertions from our deprecated custom test framework by default.// Uncomment the following to use the old assertions:// const Test = require("@codewars/test-compat");- import codewars_test as test
- from solution import give_it_all
describe("Solution", function() {it("should test for something", function() {// Test.assertEquals(1 + 1, 2);// assert.strictEqual(1 + 1, 2);});});- @test.describe("Example")
- def test_group():
- @test.it("test case")
- def test_case():
- test.assert_equals(give_it_all(0), '')
- test.assert_equals(give_it_all(10), 'abcdefghij')
- test.assert_equals(give_it_all(15), 'abcdefghijklmno')
- test.assert_equals(give_it_all(20), 'abcdefghijklmnopqrst')
- test.assert_equals(give_it_all(25), 'abcdefghijklmnopqrstuvwxy')
- test.assert_equals(give_it_all(30), 'abcdefghijklmnopqrstuvwxyz')
- test.assert_equals(give_it_all(-1), '')
Recursion
Mathematics
import static java.util.Arrays.stream; interface Solution { static int similarPairs(String[] words) { return words.length - (int) stream(words).distinct().count(); } }import static java.util.stream.Collectors.toMap;import static java.util.stream.IntStream.range;import static java.util.function.Function.identity;- import static java.util.Arrays.stream;
class Solution {public static int similarPairs(String[] words) {return stream(words).collect(toMap(identity(), x -> 1, Integer::sum)).values().stream().mapToInt(x -> x - 1).sum();}- interface Solution {
- static int similarPairs(String[] words) {
- return words.length - (int) stream(words).distinct().count();
- }
- }
import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; // TODO: Replace examples and use TDD by writing your own tests class SolutionTest { @Test void testSomething() { String[] cars = {"Volvo", "BMW", "Ford", "Mazda"}; String[] cars2 = {"Volvo", "Volvo", "Volvo", "Mazda"}; assertEquals(Solution.similarPairs(cars), 0); assertEquals(Solution.similarPairs(cars2), 2); } }- import org.junit.jupiter.api.Test;
- import static org.junit.jupiter.api.Assertions.assertEquals;
- // TODO: Replace examples and use TDD by writing your own tests
- class SolutionTest {
- @Test
- void testSomething() {
Solution aaa = new Solution();- String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
- String[] cars2 = {"Volvo", "Volvo", "Volvo", "Mazda"};
assertEquals("actual", "actual");assertEquals(aaa.similarPairs(cars), 0);assertEquals(aaa.similarPairs(cars2), 2);- assertEquals(Solution.similarPairs(cars), 0);
- assertEquals(Solution.similarPairs(cars2), 2);
- }
- }