题目大意是传入一个字符串s和一个字符串数组words,其中words中的所有字符串均等长.要在s中找所有的索引index,使得以s[index]为起始字符的长为words中字符串总长的s的子串是由words中的所有字符串(每个出现一次)拼接而成. 这个题目有点恶趣味,而且也很难找到特别有效的优化方案.下面说说我的思路: 首先记s的长度为m,而words的长度为k,words中字符串的长度为n.显然当n*k>m时只需要返回一个空集即可,因此可以认为n*k<=m. 首先我们将所有的words中的元…

Substring with Concatenation of All Words You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without any interv…

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, giv…

题目链接 You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without any intervening characters. For example, given:…

原题地址:https://oj.leetcode.com/problems/substring-with-concatenation-of-all-words/ 题意: You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each wo…

You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without any intervening characters. For example, given:S: "b…

You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without any intervening characters. For example, given: S: "…

超时代码 class Solution { public: vector<int> findSubstring(string s, vector<string>& words) { map<string,int> coll; for(auto i:words) coll[i]++; vector<int> res; int len=words[0].size(),sum=words.size(); for(int k=0;k<=s.length…

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, giv…

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…