Have you learned something about segment tree? If not, don't worry, I will explain it for you.  Segment Tree is a kind of binary tree, it can be defined as this:  - For each node u in Segment Tree, u has two values: $L_u$ and $R_u$.  - If $L_u = R_u$…

一.向Solr提交索引的方式 1.使用post.jar进行索引 (1)创建文档xml文件 <add> <doc> <field name="id">test4</field> <field name="title">testagain</field> <field name="url">http://www.163.com</field> </d…

Hiking Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 932 Accepted Submission(s): 483 Special Judge Problem Description There are n soda conveniently labeled by 1,2,-,n. beta, their best friend…

Safecracker Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 10165 Accepted Submission(s): 5213 Problem Description === Op tech briefing, 2002/11/02 06:42 CST === "The item is locked in a Klein saf…

文章目录 1. 简介 2. 实验 3. 实战 3.1. 修改 Constraints 3.2. 安装和卸载 Constraints 3.3. 安装和卸载 View 3.4. 其他 4. 后话 以前和安卓的同学聊天的时候,谈到适配一直是一个非常开心的话题,看到他们被各种屏幕适配折磨的欲仙欲死,心里真替他们高兴.不过在做到 iPhone 和 iPad 的适配的时候,一个页面需要配置多个 xib 进行开发还是个很头疼的事情.再加上 iPhone6 和 iPhone6 plus 的发布,适配似乎也变得麻…

函数指针:指向函数的指针变量. 函数名相当于首地址. 函数指针定义:返回值类型  (*函数指针变量名)(参数类型1,参数类型2,....)=初始值 函数指针类型:返回值类型  (*)(参数类型1,参数类型2,....)=初始值 如:int  (*)(int int)  表示返回值是int类型,参数有两个,都为int类型的指针变量类型 void sayHello(){ printf("你好!!! \n"); } void (*p)()=NULL;   //表示返回值为空,无参数的,函数指…

Base64是一种将二进制转为可打印字符的编码方法,主要用于邮件传输.Base64将64个字符(A-Z,a-z,0-9,+,/)作为基本字符集,把所有符号转换为这个字符集中的字符. 编码: 编码每次将3字节转为4字节,若输入字节数不是3的倍数,则在末尾填充0字节使其长度为3的倍数.对于3字节,每次取出6位,并在前面添加2位0构成一个字节,以此字节为下标查找Base64码表(如下图)输出对应字符.每次将3字节转为4字节(3*8=4*6),直至得到整个输入串的编码结果.最后,若之前在输入中添加了1个…

应用场景: 在项目中,经常遇到将数据库数据导出到Excel,针对这种情况做了个程序封装.工作原理:利用NPOI将SQL语句查询出的DataTable数据导出到Excel,所见即所得. 程序界面:   源代码: http://download.csdn.net/detail/a497785609/8119729 点击下载  版权声明:本文为博主原创文章,未经博主允许不得转载.…

Fence Repair Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 32424 Accepted: 10417 Description Farmer John wants to repair a small length of the fence around the pasture. He measures the fence and finds that he needs N (1 ≤ N ≤ 20,000) pla…

#include <iostream> #include<cstring> #include<cstdio> #include<cmath> const int maxn = 301; const int INF = (1<<31)-1; int w[maxn][maxn]; int lx[maxn],ly[maxn]; //顶标 int linky[maxn]; int visx[maxn],visy[maxn]; int slack[maxn…