[解決済み] JavaScriptです。括弧のバランスをとる

let output = [];

function checkParanthesis(str) {
  let count = 0;
  for (let i = 0; i < str.length; i++) {
    if (str[i] === "(") {
      output.push(str[i]);
      count++;
    } else if (str[i] === ")") {
      if (output.pop() !== "(") {
        count++
      }
    }
    console.log(count);
  }
  return output.length;
}

checkParanthesis('()))')

function checkParanthesis(str) {
    let brackets = [];
    for (let i = 0; i < str.length; i++) {     
        if (str[i] === "(") {
            brackets.push(str[i]);
        } else if (str[i] === ")") {
            if (brackets[brackets.length - 1] === "(") brackets.pop();
            else brackets.push("#");
        }
    }
    return brackets.length;
}

console.log(checkParanthesis('()))'));