目录 题目链接 注意点 解法 小结 题目链接 Group Anagrams - LeetCode 注意点 字母都是小写的 解法 解法一:用一个字符串表示strs[i]中出现的字母,比如:abc->111000000000000000000000000.aab->210000000000000000000000000.同时用map保存hash与vector的下标对应关系.时间复杂度O(n) class Solution { public: vector<vector<string&g…

Given an array of strings, return all groups of strings that are anagrams. Note: All inputs will be in lower-case. Summary: To sort and compare strings, using map to record distinct strings. class Solution { public: vector<string> anagrams(vector<…

题目: Given an array of strings, return all groups of strings that are anagrams. Note: All inputs will be in lower-case. 题解: 这道题看所给的字符串数组里面有多少个是同一个变形词变的.这道题同样使用HashMap来帮助存老值和新值,以及帮忙判断是否是变形词. 首先对每个string转换成char array然后排下序,HashMap里面的key存sort后的词,value存原始的…

Question 49. Group Anagrams Solution 思路:维护一个map,key是输入数组中的字符串(根据字符排好序) Java实现: public List<List<String>> groupAnagrams(String[] strs) { Map<String, List<String>> map = new HashMap<>(); for (String str : strs) { String key = g…

最近在准备找工作的算法题,刷刷LeetCode,以下是我的解题报告索引,每一题几乎都有详细的说明,供各位码农参考.根据我自己做的进度持续更新中......                              本文地址 LeetCode:Reverse Words in a String LeetCode:Evaluate Reverse Polish Notation LeetCode:Max Points on a Line LeetCode:Sort List LeetCode:Ins…

Given two lists A and B, and B is an anagram of A. B is an anagram of A means B is made by randomizing the order of the elements in A. We want to find an index mapping P, from A to B. A mapping P[i] = j means the ith element in A appears in B at inde…

目录 LeetCode 字符串专题 <c++> \([5]\) Longest Palindromic Substring \([28]\) Implement strStr() [\(49\)] Group Anagrams LeetCode 字符串专题 <c++> \([5]\) Longest Palindromic Substring 最长回文子串 \([28]\) Implement strStr() 要求实现c++中strstr()函数. 解法一:暴力 时间复杂度 \(…

Here is my collection of solutions to leetcode problems. Related code can be found in this repo: https://github.com/zhuli19901106/leetcode LeetCode - Course Schedule LeetCode - Reverse Linked List LeetCode - Isomorphic Strings LeetCode - Count Primes…

Given a string s and a non-empty string p, find all the start indices of p's anagrams in s. Strings consists of lowercase English letters only and the length of both strings s and p will not be larger than 20,100. The order of output does not matter.…

Given an array of strings, return all groups of strings that are anagrams. Note: All inputs will be in lower-case. 这道题让我们找出给定字符串集中所有的错位词,所谓的错位词就是两个字符串中字母出现的次数都一样,只是位置不同,比如abc,bac, cba等它们就互为错位词,那么我们如何判断两者是否是错位词呢,我们发现如果把错位词的字符顺序重新排列,那么会得到相同的结果,所以重新排序是判…