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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Code
Diff
  • function removeSymbols(str) {
      let newStr = "";
      // list of possible symbols
      const symbols = "@#$%&=^*()-_=+<>/[]|?!,.£`".split("");
      // iterate through each characters in the input str, ignore character if it is a symbol
      for (const char of str){
        if (!symbols.includes(char)){
          newStr += char;
        }
      }
      // return new string with no symbols
      return (newStr);
    }
    • function removeSymbols(str) {
    • const regEx = /[&%!@=\*£]/g;
    • const newStr = str.replaceAll(regEx, "");
    • let newStr = "";
    • // list of possible symbols
    • const symbols = "@#$%&=^*()-_=+<>/[]|?!,.£`".split("");
    • // iterate through each characters in the input str, ignore character if it is a symbol
    • for (const char of str){
    • if (!symbols.includes(char)){
    • newStr += char;
    • }
    • }
    • // return new string with no symbols
    • return (newStr);
    • }
Code
Diff
  • print('hello', len('hello'), '\n')
    • print("hello", 7, sep='
    • ')
    • print('hello', len('hello'), '
    • ')

It takes 2 times less than the original code. It your choice to keep whichever code you want. Good luck

Code
Diff
  • def sumi(arr): # parity: sum([]) == 0
        #try: return arr.pop(0) + sumi(arr)
        #except: return 0
        sum=0
        for i in range(len(arr)):
            sum+=arr[i]
            i+=1
        return sum
    • def sumi(arr): # parity: sum([]) == 0
    • try: return arr.pop(0) + sumi(arr)
    • except: return 0
    • #try: return arr.pop(0) + sumi(arr)
    • #except: return 0
    • sum=0
    • for i in range(len(arr)):
    • sum+=arr[i]
    • i+=1
    • return sum
Code
Diff
  • #lang racket
    
    (provide factorial)
    
    (define (factorial n)
      (apply * (range 2 (add1 n))))
    
    • #lang racket
    • (provide factorial)
    • (define (factorial n)
    • (if (<= n 1)
    • 1
    • (* n (factorial (sub1 n)))))
    • (apply * (range 2 (add1 n))))