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  1. Prepare
  2. Data Structures
  3. Stacks
  4. Balanced Brackets
  5. Discussions

Balanced Brackets

  • jurgen_wohllk
     + 0 comments

    you need to validate this case '{{}' when the stack length is > 0 because there are more opening brackets than the closing ones

    function isBalanced(s) {
  const stack = [];
  let i = 0;
  while (i <= s.length) {
    switch (s[i]) {
      case "(":
      case "[":
      case "{":
        stack.push(s[i]);
        break;
      case ")":
        if (stack.pop() !== "(") return "NO";
        break;
      case "]":
        if (stack.pop() !== "[") return "NO";
        break;
      case "}":
        if (stack.pop() !== "{") return "NO";
        break;
    }

    i++;
  }
  if (stack.length > 0) return "NO";
  return "YES";
}