leetcode面试准备: Substring with Concatenation of All Words
leetcode面试准备: Substring with Concatenation of All Words
1 题目
You are given a string, s, and a list of words, words, that are all of the same length. Find all starting indices of substring(s) in s that is a concatenation of each word in words exactly once and without any intervening characters.
For example, given:
s: "barfoothefoobarman"
words: ["foo", "bar"]
You should return the indices: [0,9].
(order does not matter).
接口:public List<Integer> findSubstring(String s, String[] words)
2 思路
题意
找出可以连接成words里面单词的组合,输出子字符串的起始位置。
复杂度: Time
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