1768-merge-strings-alternately.js

/**
 * 1768. Merge Strings Alternately
 * https://leetcode.com/problems/merge-strings-alternately/
 * Difficulty: Easy
 *
 * You are given two strings word1 and word2. Merge the strings by adding letters in alternating
 * order, starting with word1. If a string is longer than the other, append the additional
 * letters onto the end of the merged string.
 *
 * Return the merged string.
 */

/**
 * @param {string} word1
 * @param {string} word2
 * @return {string}
 */
var mergeAlternately = function(word1, word2) {
  let result = '';
  for (let i = 0; i < Math.max(word1.length, word2.length); i++) {
    if (i < word1.length) result += word1[i];
    if (i < word2.length) result += word2[i];
  }
  return result;
};