30. Substring with Concatenation of All Words

[LeetCode] 30. Substring with Concatenation of All Words

30. Substring with Concatenation of All Words Hard You are given a string s and an array of strings words of the same length. Return all starting indices of substring(s) in s that is a concatenation of each word in words exactly once, in any order, and without any intervening characters. You can return the answer in any order. Example 1: Input: s = "barfoothefoobarman", words = ["foo","bar"] Out..