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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ihar.katkavetsvs.shatodj

Grade Calculator - Convert Grade to letter

Code
Diff
  • func gradeCalc(_ score: Int) -> String {
  (0...100~=score) ? String(Array("FFFFFFDCBAA")[score/10]) : "Not a grade" 
}
    • func gradeCalc(_ score: Int) -> String {
    • (0...100~=score) ? ["F","F","F","F","F","F","D","C","B","A","A"][score / 10] : "Not a grade"
    • (0...100~=score) ? String(Array("FFFFFFDCBAA")[score/10]) : "Not a grade"
    • }
ihar.katkavetsvs.ihar.katkavets

Insert a given separator into a string at a given character interval

Code
Diff
  • extension String {
    func insert(_ value: String, interval: Int) -> String {
        guard interval > 0 && interval < count else { return self }
        let chars = Array(self)
        var result = ""
        var i = 0
        while i+interval<count {
            result.append(String(chars[i..<min(count,i+interval)])+value)
            i += interval
        }
        result.append(String(chars[i..<min(count,i+interval)]))
        return result 
    }
}
    • extension String {
    • func insert(_ value: String, interval: Int) -> String {
    • guard interval > 0 && interval < count else { return self }
    • let chars = Array(self)
    • var result = ""
    • var i = 0
    • while i+interval<count {
    • result.append(String(chars[i..<min(count,i+interval)]))
    • result.append(value)
    • result.append(String(chars[i..<min(count,i+interval)])+value)
    • i += interval
    • }
    • result.append(String(chars[i..<min(count,i+interval)]))
    • return result
    • }
    • }
Nafi Rahimvs.lyaguxafrog

Reverse strings but python now

Fundamentals
Strings
Code
Diff
  • def reverse_string(n):
    return n[::-1]
    • reverse_string = lambda s: s[::-1]
    • def reverse_string(n):
    • return n[::-1]
s4nnetvs.Rishabh Trivedi

Сумма нечетных

Code
Diff
  • sumNechet = (a, b) => (b/2).toFixed()**2;
    • //Крюков Кирилл
    • function sumNechet(a, b) {
    • var answer = 0;
    • for (var i = a; i <= b; i++){
    • if (i % 2 != 0){
    • answer += i;
    • }
    • }
    • return answer;
    • }
    • console.log(sumNechet(5,15));
    • sumNechet = (a, b) => (b/2).toFixed()**2;
Vatmanchikvs.an171

Табулирование функции

Code
Diff
  • const tab = (f, a, b, h) => {
 let sum = 0;
  for (let x = a; x <= b; x +=h){
    sum += f(x); //Filippov Ilya
  }
  return sum
}
    • const tab = (f, a, b, h) => {
    • let sum = 0;
    • for (let x = a; x <= b; x +=h){
    • sum += f(x); //Filippov Ilya
    • }
    • return sum
    • }
Roman_rznvs.TKpirate123

Зрительный зал

Code
Diff
  • const cinema_auditorium = (spisok2d, ryad) => {
  console.log(spisok2d, ryad);
  let totalsoldtickets = 0;

  for(let i = 0; i < spisok2d.length; i++) {
    for(let j = 0; j < spisok2d[i].length; j++) {
      if(spisok2d[i][j] === 1 && i === ryad) {
        totalsoldtickets++;
      }
    }
  }

  return totalsoldtickets;
}
    • const cinema_auditorium = (spisok2D,ryad)=> {
    • console.log(spisok2D,ryad)
    • return 4
    • const cinema_auditorium = (spisok2d, ryad) => {
    • console.log(spisok2d, ryad);
    • let totalsoldtickets = 0;
    • for(let i = 0; i < spisok2d.length; i++) {
    • for(let j = 0; j < spisok2d[i].length; j++) {
    • if(spisok2d[i][j] === 1 && i === ryad) {
    • totalsoldtickets++;
    • }
    • }
    • }
    • return totalsoldtickets;
    • }
Pinnaclevs.BubblerFailed Tests

cw-2.py test.expect_error(function, exception=Exception, message, parameters)

Improvements

Code
Diff
  • # Effectively works with everything

def new_expect_error(function, exception=Exception, message = "{} did not raise an exception of {}", parameters = []) -> bool:
    if not(isinstance(function, type(lambda:[])) and isinstance(exception, Exception) and isinstance(message, str) and isinstance(parameters, list)):
        raise TypeError('parameters input problem')
    try:
        if parameters==[]:
            function(*parameters)
        else:
            function()
    except exception:
        return True
    return False
    • # BaseException >> Exception
    • def f1(): raise Exception()
    • # Effectively works with everything
    • # BaseException >> Exception >> ArithmeticError >> ZeroDivisionError
    • def f2(): return 1 // 0
    • # BaseException >> Exception >> LookupError >> KeyError
    • def f3(): return {}[1]
    • def f0(): pass
    • def new_expect_error(function, exception=Exception, message = "{} did not raise an exception of {}", parameters = []) -> bool:
    • if not(isinstance(function, type(lambda:[])) and isinstance(exception, Exception) and isinstance(message, str) and isinstance(parameters, list)):
    • raise TypeError('parameters input problem')
    • try:
    • if parameters==[]:
    • function(*parameters)
    • else:
    • function()
    • except exception:
    • return True
    • return False