Description Input Output Sample Input 4 2 1 2 3 2 1 3 2 4 Sample Output Yes No HINT 题解 莫队.加个标记数组维护该数在区间中出现了几次,再加个变量统计有几个数是重复的. #include<map> #include<set> #include<ctime> #include<cmath> #include<queue> #include<stack>…

--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…

I believe the biggest distinction is that a stub you have already written with predetermined behavior. So you would have a class that implements the dependency (abstract class or interface most likely) you are faking for testing purposes and the meth…

在国外看到详细的说明一篇,非常浅显透彻.转给国内的筒子们:-) 原文标题: Spring中的<context:annotation-config>与<context:component-scan>到底有什么不同? 原文出处:http://stackoverflow.com/a/7456501 <context:annotation-config> is used to activate annotations in beans already registered in…

ref:http://stackoverflow.com/questions/271743/whats-the-difference-between-b-and-strong-i-and-em They have the same effect on normal web browser rendering engines, but there is afundamental difference between them. As the author writes in a discussio…

虽然有点久远  还是放一下吧. 传送门:https://www.luogu.org/contest/show?tid=754 第一题  沉迷游戏,伤感情 #include <queue> #include <cstdio> #include <cstring> #include <iostream> #include <algorithm> using namespace std; ],last,now,sum[],s; deque<lon…

Difference between SendRedirect and forward is one of classical interview questions asked during java web developer interview. This is not just applicable for servlet but also for JSP in which we can use forward action or call sendRedirect() method f…

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…

题目链接:http://www.luogu.org/problem/show?pid=1268#sub -------- 这道题费了我不少心思= =其实思路和标称毫无差别,但是由于不习惯ACM风格的题目,没有打答案之间的换行,wa了好几次 解决所有"构造"问题都要按照如下的步骤: 寻找特例.特征 建立模型 一般化模型 寻找特例 (1) 我们假设结点数为1,显然答案为0,因为这棵树的边集为空. (2) 当结点数为2时,答案就是d[1][2],即(1,2)的距离. (3) 当结点数为3时呢…

MySQL: @variable vs. variable. Whats the difference?   up vote351down votefavorite 121 In another question I posted someone told me that there is a difference between: @variable and: variable in MySQL. He also mentioned how MSSQL has batch scope and…

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…

if you need append some string to element and need set some attribute on these string at the same time,you'b better use appendTo funtion.because you can use this function like this: $(str).appendTo('.content tbody').data(action, EditAction.Add); but…

创建一个函数,接受两个或多个数组,返回所给数组的 对等差分(symmetric difference) (△ or ⊕)数组. 给出两个集合 (如集合 A = {1, 2, 3} 和集合 B = {2, 3, 4}), 而数学术语 "对等差分" 的集合就是指由所有只在两个集合其中之一的元素组成的集合(A △ B = C = {1, 4}). 对于传入的额外集合 (如 D = {2, 3}), 你应该安装前面原则求前两个集合的结果与新集合的对等差分集合 (C △ D = {1, 4} △…

what's the difference between dim as and dim as new? There is no difference with value types (Integer, Double, Structures, ...). The instance is created anyway in both cases. There is a difference with reference types: Without new, only the space for…

Stored Procedures are pre-compile objects which are compiled for first time and its compiled format is saved which executes (compiled code) whenever it is called. But Function is compiled and executed every time when it is called. For more about stor…

Both parameterized queries and prepared statements are exactly the same thing. Prepared statement seems to be the more commonly used term, but there is no difference between both terms. Parameterized queries and prepared statements are features of da…

What is the difference between categorical, ordinal and interval variables? In talking about variables, sometimes you hear variables being described as categorical (or sometimes nominal), or ordinal, or interval.  Below we will define these terms and…

Difference between LET and LET* in Common LISP   LET   Parallel binding which means the bindings come to life at the same time and they do not shadow each other. The values are effective inside LET and they are undefined outside LET. Just like local…

TIF vs TIFF Many people are confused with similar file extensions that only differ by a single letter. One good example of this is TIF and TIFF. Well, to cut to the point, there is no difference between TIF and TIFF. They both are extensions used by…

FITTING A MODEL VIA CLOSED-FORM EQUATIONS VS. GRADIENT DESCENT VS STOCHASTIC GRADIENT DESCENT VS MINI-BATCH LEARNING. WHAT IS THE DIFFERENCE? In order to explain the differences between alternative approaches to estimating the parameters of a model,…

求两个sorted数组的intersection e.g. [1,2,3,4,5],[2,4,6] 结果是[2,4] difference 类似merge, 分小于等于大于三种情况,然后时间O(m+n), 空间O(1) package ShortestSubsequenceIncluding; import java.util.*; public class Solution2 { public ArrayList<Integer> setInters(int[] arr1, int[] ar…

Given an array with integers. Find two non-overlapping subarrays A and B, which |SUM(A) - SUM(B)| is the largest. Return the largest difference. Note The subarray should contain at least one number Example For [1, 2, -3, 1], return 6 Challenge O(n) t…

http://acm.hdu.edu.cn/showproblem.php?pid=4715 Difference Between Primes Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description All you know Goldbach conjecture.That is to say, Every even integer great…

Difference Between Primes Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3339    Accepted Submission(s): 953 Problem Description All you know Goldbach conjecture.That is to say, Every even int…

plot a critical difference diagram , MATLAB code 建立criticaldifference函数 function cd = criticaldifference(s,labels,alpha) % % CRITICALDIFFERNCE - plot a critical difference diagram % % CRITICALDIFFERENCE(S,LABELS) produces a critical difference diagra…

OLAP vs OLTP: what makes the difference OLPT and OLAP are complementingtechnologies. You can't live without OLTP: it runs your business dayby day. So, using getting strategic information from OLTP is usuallyfirst "quick and dirty" approach, but…

Disaster Recovery, High Availability, and Continuous Availability - What's the Difference? Posted bydavid ton September 7, 2010 at 12:30am View Blog Last month I posted a video that gave a brief overview of how data replication is used for continuous…

http://www.softwaretestinghelp.com/what-is-performance-testing-load-testing-stress-testing/ Difference Between Performance Testing, Load Testing and Stress Testing – With Examples Q. What is difference between Performance Testing, Load Testing and St…

题目传送门:https://www.luogu.org/problem/show?pid=2170 题目描述 老师想从N名学生中选M人当学霸,但有K对人实力相当,如果实力相当的人中,一部分被选上,另一部分没有,同学们就会抗议.所以老师想请你帮他求出他该选多少学霸,才能既不让同学们抗议,又与原来的M尽可能接近 输入输出格式 输入格式: 第一行,三个正整数N,M,K. 第2...K行,每行2个数,表示一对实力相当的人的编号(编号为1-N) 输出格式: 一行,表示既不让同学们抗议,又与原来的M尽可能接…

题目传送门:https://www.luogu.org/problem/show?pid=2647 题目描述 现在你面前有n个物品,编号分别为1,2,3,--,n.你可以在这当中任意选择任意多个物品.其中第i个物品有两个属性Wi和Ri,当你选择了第i个物品后,你就可以获得Wi的收益:但是,你选择该物品以后选择的所有物品的收益都会减少Ri.现在请你求出,该选择哪些物品,并且该以什么样的顺序选取这些物品,才能使得自己获得的收益最大. 注意,收益的减少是会叠加的.比如,你选择了第i个物品,那么你就会获…