#2390 - Removing Stars From a String

Medium • View on LeetCode • View on GitHub

Problem Description

You are given a string s, which contains stars *.

In one operation, you can:

Choose a star in s.
Remove the closest non-star character to its left, as well as remove the star itself.

Return the string after all stars have been removed.

Note:

The input will be generated such that the operation is always possible.
It can be shown that the resulting string will always be unique.

Solution

/**
 * @param {string} s
 * @return {string}
 */
var removeStars = function(s) {
  const result = [];
  for (let i = 0; i < s.length; i++) {
    if (s[i] !== '*') {
      result.push(s[i]);
    } else {
      result.pop();
    }
  }
  return result.join('');
};