1961. Check If String Is a Prefix of Array

Given a string s and an array of strings words, determine whether s is a prefix string of words. A string s is a prefix string of words if s can be made by concatenating the first k strings in words for some positive k no larger than words.length. Return true if s is a prefix string of words, or false otherwise. Example 1: Input: s = "iloveleetcode", words = ["i","love","leetcode","apples"]