#2315 - Count Asterisks

Easy • View on LeetCode • View on GitHub

Problem Description

You are given a string s, where every two consecutive vertical bars '|' are grouped into a pair. In other words, the 1st and 2nd '|' make a pair, the 3rd and 4th '|' make a pair, and so forth.

Return the number of '*' in s, excluding the '*' between each pair of '|'.

Note that each '|' will belong to exactly one pair.

Solution

/**
 * @param {string} s
 * @return {number}
 */
var countAsterisks = function(s) {
  let isInsidePair = false;
  let result = 0;

  for (const char of s) {
    if (char === '|') {
      isInsidePair = !isInsidePair;
    } else if (char === '*' && !isInsidePair) {
      result++;
    }
  }

  return result;
};