A. Dasha and Stairs time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output On her way to programming school tiger Dasha faced her first test - a huge staircase! The steps were numbered from one t…

利用线性表实现队列,为了有效利用空间,将其设计为循环结构,防止假溢出:牺牲一个存储单元以区分队空.队满. 设front队头,rear队尾,N为顺序表大小 队空:rear==front 队满:(rear+1)%N==front #include<stdio.h> #define Elemtype int #define N 100 struct Queue { Elemtype data[N]; int front,rear; }; void initQueue(Queue &Q) {…

B. Dasha and friends time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Running with barriers on the circle track is very popular in the country where Dasha lives, so no wonder that on her wa…

DFS算法: #include<stdio.h> #include<math.h> void find(int k,int w); int num[23]={0}; int min=20001; int n,max=0; void find(int k,int w){ int sum=(int)fabs(max-w-w); if(k==n)return; if(sum<min)min=sum; find(k+1,w+num[k]); find(k+1,w); } int ma…

IP Address Time Limit: 2 Seconds      Memory Limit: 65536 KB Suppose you are reading byte streams from any device, representing IP addresses. Your task is to convert a 32 characters long sequence of '1s' and '0s' (bits) to a dotted decimal format. A…

I am Nexus Master! Time Limit: 2 Seconds      Memory Limit: 65536 KB NexusHD.org is a popular PT (Private Tracker) site in Zhejiang University aiming to provide high quality stuff. In order to encourage users to unload more stuff, the administrators…

参考自core java v2, chapter3 Networking. 注:URLConnection的子类HttpURLConnection被广泛用于Android网络客户端编程,它与apache HttpClient是两种主要的客户端实现方式,google官方推荐使用HttpURLConnection. 使用URL类可以简单获取网页信息, URL url = new URL("http://www.baidu.com"); InputStream is = url.openSt…

C++中临时对象又称无名对象.临时对象主要出现在如下场景. 1.建立一个没有命名的非堆(non-heap)对象,也就是无名对象时,会产生临时对象. Integer inte= Integer(5); //用无名临时对象初始化一个对象 2.构造函数作为隐式类型转换函数时,会创建临时对象,以值的方式传递,用作实参传递给函数. 例: class Integer { public: Integer(int i):m_val(i){} ~Integer(){} private: int m_val; };…

Uniform Generator Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 21176 Accepted Submission(s): 8294 Problem Description Computer simulations often require random numbers. One way to generate pseu…

希尔伯特矩阵 希尔伯特矩阵是一种数学变换矩阵 Hilbert matrix,矩阵的一种,其元素A(i,j)=1/(i+j-1),i,j分别为其行标和列标. 即: [1,1/2,1/3,--,1/n] |1/2,1/3,1/4,--,1/(n+1)| |1/3,1/4,1/5,--,1/(n+2)| -- [1/n,1/(n+1),1/(n+2),--,1/(2n-1)] 希尔伯特矩阵是一种数学变换矩阵,正定,且高度病态 (即,任何一个元素发生一点变动,整个矩阵的值和逆矩阵都会发生巨大变化),病态…