Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter at a random position. Find the letter that was added in t. Example: Input: s = "abcd" t = "ab…

expected number,sequence,or string.map evaluated instead of freemarker.template.smplehash 使用freemark标签遍历map当报纸的异常集合. 终于找到了,它是由于freemark的<#list>标签只能遍历key至string的map. 版权声明:本文博客原创文章.博客,未经同意,不得转载.…

import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; public class JSONParse { public static void main(String[] args) { // Str…

总结的一些json格式和对象/String/Map/List等的互转工具类,有需要的可以看看,需要引入jackson-core-asl-1.7.1.jar.jackson-jaxrs-1.7.1.jar.jackson-mapper-asl-1.7.1.jar这三个jar包 package com.zuidaima.util.json; import java.io.InputStream; import java.io.OutputStream; import java.io.Reader;…

private static String buildMd5Params(Map<String, String> map) { StringBuilder result = new StringBuilder(256); Map<String, String> sortedMap = new TreeMap(new Comparator<String>() { public int compare(String o1, String o2) { return o1.co…

原题 Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter at a random position. Find the letter that was added in t. Example: Input: s = "abcd" t = "…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 方法一:字典统计次数 方法二:异或 方法三:排序 日期 [LeetCode] https://leetcode.com/problems/find-the-difference/ Difficulty: Easy 题目描述 Given two strings s and t which consist of only lowercase letter…

-------------------------------------------------- 先计算每个字母的出现次数然后减去,最后剩下的那一个就是后来添加的了. AC代码: public class Solution { public char findTheDifference(String s, String t) { int book[]=new int[26]; for(int i=0;i<s.length();i++) book[s.charAt(i)-'a']++; for…

Total Difference Strings 给一个string列表,判断有多少个不同的string,返回个数相同的定义:字符串长度相等并从左到右,或从右往左是同样的字符 abc 和 cba 为视为相同. 采用“哈希表”来存储字符串,在O(N)的时间复杂度内完成. #include <string> #include <iostream> #include <algorithm> #include <initializer_list> #include…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1251 思路:重点是用gets输入,而且用a[20],不能直接输入string类型的. #include<iostream> #include<cstdio> #include<cstring> #include<string> #include<map> using namespace std; string str,s; ]; map <st…