给定两个字符串 s 和 t,它们只包含小写字母. 字符串 t 由字符串 s 随机重排,然后在随机位置添加一个字母. 请找出在 t 中被添加的字母. 示例: 输入: s = "abcd" t = "abcde" 输出: e 解释: 'e' 是那个被添加的字母. class Solution { public: char findTheDifference(string s, string t) { int sum = 0; int sum2 = 0; for(int…

给定两个字符串 s 和 t,它们只包含小写字母.字符串 t 由字符串 s 随机重排,然后在随机位置添加一个字母.请找出在 t 中被添加的字母.示例:输入:s = "abcd"t = "abcde"输出:e解释:'e' 是那个被添加的字母.详见:https://leetcode.com/problems/find-the-difference/description/ C++: 方法一: class Solution { public: char findTheDif…

［抄题］: 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 = &q…

set的一个用法 . difference找差集 union合并set intersection找到交集 #include<iostream> #include<string> #include<set> #include<algorithm> #include<iterator> int main() { using namespace std; ; string s1[N] = {"buffoon","think…

45. Single Number 在个数都为2的数组中找到个数为1的数 46. Missing Number 在数组中找到从0到n缺失的数字 47. Find the Difference 找两个字符串总t中多出来的那个字符 48. Linked List Cycle 判断一个链表是否有环 49. Min Stack 最小栈 ... 50. Intersection of Two Linked Lists 找到两个链表的开始相同的节点 51. Minimum Index Sum of Two…

一.运算符1.算术运算符:主要用于两个对象算数计算(加减乘除等运算)运算符: +:两个对象相加 -:得到负数或是一个数减去另一个数 *:两个数相乘或是返回一个被重复若干次的字符串 /:x除以y %:返回除法的余数 **:返回x的y次幂 //:返回商的整数部分2.比较(关系)运算符:用于两个对象比较(判断是否相等.大于等运算)运算符: ==:比较对象是否相等 !=:比较两个对象是否不相等 <>: 比较两个对象是否不相等 >: 返回x是否大于y <: 返回x是否小于y.所有比较运算符返…

set集合: •集合的创建; set_1 = set() #方法一 set_1 = {''} #方法二 •set是无序,不重复的集合; set_1 = {'k1','k2','k3'} set_1.add('k1') #往集合set_1中添加元素 set_1 = {'k1','k2','k3'} •set也可以直接将字典中的key给过滤出来放在集合中; dic_1 = {'k1':1,'k2':2} set_2 = set(a) #将字典a中的键放入集合b中 set_2 = {'k1','k2'…

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…

最近做的题记录下. 258. Add Digits Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: 3 + 8 = 11, 1 + 1 = 2. Since 2 has only one digit, return it. int addDigi…

it can be solved by Dynamical Programming.Here are some useful link: Tutorial and Code: http://www.cs.cornell.edu/~wdtseng/icpc/notes/dp3.pdfA practice: http://people.csail.mit.edu/bdean/6.046/dp/ (then click Balanced Partition) What's more, please n…

Nim or not Nim? Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 3032 Description Nim is a two-player mathematic game of strategy in which players take turns removing objects from distinct heaps.…

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…

Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is 3025  385 = 2640. Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.…

最近刚接触python,找点小任务来练练手,希望自己在实践中不断的锻炼自己解决问题的能力. 公司里会有这样的场景:有一张电子表格的内容由两三个部门或者更多的部门用到,这些员工会在维护这些表格中不定期的跟新一些自己部门的数据,时间久了,大家的数据就开始打架了,非常不利于管理.怎样快速找到两个或者多个电子表格中数据的差异呢? 解决办法: 1.Excel自带的方法(有兴趣的自行百度) 2.python 写一个小脚本 #!/usr/bin/env python # -*- coding: utf-8 -…

530. Minimum Absolute Difference in BST Given a binary search tree with non-negative values, find the minimum absolute difference between values of any two nodes. Example: Input:      1     \      3     /    2   Output: 1   Explanation: The minimum a…

Given an integer array, return the k-th smallest distance among all the pairs. The distance of a pair (A, B) is defined as the absolute difference between A and B. Example 1: Input: nums = [1,3,1] k = 1 Output: 0 Explanation: Here are all the pairs:…

Given a list of 24-hour clock time points in "Hour:Minutes" format, find the minimum minutes difference between any two time points in the list. Example 1: Input: ["23:59","00:00"] Output: 1  Note: The number of time points i…

D. Roman Digits time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Let's introduce a number system which is based on a roman digits. There are digits I, V, X, L which correspond to the numbers…

LeetCode--Find the Difference Question 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. Examp…

原题链接在这里:https://leetcode.com/problems/minimum-absolute-difference-in-bst/#/description 题目: Given a binary search tree with non-negative values, find the minimum absolute difference between values of any two nodes. Example: Input: 1 \ 3 / 2 Output: 1…

Nim or not Nim? Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2513    Accepted Submission(s): 1300 Problem Description Nim is a two-player mathematic game of strategy in which players take tur…

Smallest Difference Description Given a number of distinct decimal digits, you can form one integer by choosing a non-empty subset of these digits and writing them in some order. The remaining digits can be written down in some order to form a second…

-->Smallest Difference 直接写中文了 Descriptions: 给定若干位十进制数,你可以通过选择一个非空子集并以某种顺序构建一个数.剩余元素可以用相同规则构建第二个数.除非构造的数恰好为0,否则不能以0打头. 举例来说,给定数字0,1,2,4,6与7,你可以写出10和2467.当然写法多样:210和764,204和176,等等.最后一对数差的绝对值为28,实际上没有其他对拥有更小的差. Input  输入第一行的数表示随后测试用例的数量.对于每组测试用例,有一行至少两个…

Given an integer array, return the k-th smallest distance among all the pairs. The distance of a pair (A, B) is defined as the absolute difference between A and B. Example 1: Input: nums = [1,3,1] k = 1 Output: 0 Explanation: Here are all the pairs:…

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 排序 日期 题目地址:https://leetcode.com/problems/minimum-absolute-difference/ 题目描述 Given an array of distinct integers arr, find all pairs of elements with the minimum absolute differen…

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 Java解法 Python解法 日期 题目地址:https://leetcode.com/problems/minimum-absolute-difference-in-bst/#/description 题目描述 Given a binary search tree with non-negative values, find the minimu…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.me/ 题目地址:https://leetcode.com/problems/minimum-time-difference/description/ 题目描述: Given a list of 24-hour clock time points in "Hour:Minutes" format, find the minimum minutes difference between…

--reference Java Heap Memory vs Stack Memory Difference 在数据结构中,堆和栈可以说是两种最基础的数据结构,而Java中的栈内存空间和堆内存空间有什么异同,以及和数据结构中的堆栈有何关系? 一.Java 堆存储空间 堆内存(堆存储空间)会在Java运行时分配给对象(Object)或者JRE的类.只要我们创建了一个对象,那么在堆中肯定会分配一块存储空间给这个对象.而我们熟知的Java垃圾回收就是在堆存储空间上进行的,用以释放那些没有任何引用指向…

在学习springAOP时,出现如下异常: 无法访问org.springframework.core.NestedRuntimeException 找不到org.springframework.core.NestedRuntimeException的类文件 原因是:缺少spring-core.jar包…

自从vs装了Resharper,看见提示总是手贱的想去改掉它.于是乎手一抖,把一个 可视web部件的命名空间给改了. 喏,从LibrarySharePoint.WebPart.LibraryAddEditFolder改为:LibrarySharePoint.WebPartOne.LibraryAddEditFolder 作为老司机,我知道我干了什么,直接用SPD打开目标页面,修正如下: <%@ Register tagprefix="LibraryAddEditFolder" n…