[CodeWars] Valid Braces

vliadBraces.md

괄호가 유효한지 체크

My Solution

function validBraces(braces){
  var stack = [];
  return braces.split('').map(b=> {
    if ('({['.indexOf(b)>=0) {
      stack.push(b);
      return true;
    } else {
      var e = stack.pop();
      return '({['.indexOf(e) == ')}]'.indexOf(b);
    }
  }).every(b=>b) && stack.length == 0;
}

Clever

function validBraces(braces){
  while(braces.indexOf("{}") != -1 || braces.indexOf("()") != -1 || braces.indexOf("[]") != -1){
    braces = braces.replace("{}", "").replace("()", "").replace("[]", "");
  }
  return braces.length == 0;
}

function validBraces(braces){
 while(/\(\)|\[\]|\{\}/g.test(braces)){braces = braces.replace(/\(\)|\[\]|\{\}/g,"")}
 return !braces.length;
}

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