Leetcode problem 54 - Check If Two String Arrays are Equivalent

Given two string arrays word1 and word2, return true if the two arrays represent the same string, and false otherwise.

A string is represented by an array if the array elements concatenated in order forms the string.

Example 1:

Input: word1 = [“ab”, “c”], word2 = [“a”, “bc”] Output: true Explanation: word1 represents string “ab” + “c” -> “abc” word2 represents string “a” + “bc” -> “abc” The strings are the same, so return true. Example 2:

Input: word1 = [“a”, “cb”], word2 = [“ab”, “c”] Output: false Example 3:

Input: word1 = [“abc”, “d”, “defg”], word2 = [“abcddefg”] Output: true

Constraints:

1 <= word1.length, word2.length <= 103 1 <= word1[i].length, word2[i].length <= 103 1 <= sum(word1[i].length), sum(word2[i].length) <= 103 word1[i] and word2[i] consist of lowercase letters.

/**
 * @param {string[]} word1
 * @param {string[]} word2
 * @return {boolean}
 */
var arrayStringsAreEqual = function (word1, word2) {
  return word1.join("") === word2.join("");
};

I have word1 and word2 string arrays. I need to put together in one word to compare if it’s true. I can use join method to do it, and return boolean value.