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HDU 1102 && POJ 2421 Constructing Roads (经典MST~Prim)
链接:http://poj.org/problem?id=2421  或   http://acm.hdu.edu.cn/showproblem.php?pid=1102 Problem Description There are N villages, which are numbered from 1 to N, and you should build some roads ...
分类:其他好文   时间:2014-05-10 09:34:09    阅读次数:389
POJ-1042 Gone Fishing (贪心法求最佳钓鱼方案
John is going on a fishing trip. He has h hours available (1 <= h <= 16), and there are n lakes in the area (2 <= n <= 25) all reachable along a single, one-way road. John starts at lake 1, but he can finish at any lake he wants. He can only travel from on...
分类:其他好文   时间:2014-05-07 08:48:52    阅读次数:515
C++面向对象不同于Java之处总结
这两天较系统的看了下C++的基本用法,对比自己对Java理解,感觉就是C++特性远远多于Java,语法上兼容C,更加贴近系统和底层,对内存操作非常的灵活。如: C++中类的对象可以开辟在栈空间中。Java类的对象都必须用new关键字开辟在堆中; C++的基本数据类型也可以用new开辟在堆中。Java基本数据类型只能开辟在栈中,除非使用包装类包装成对象; C++用new开辟的内存必须手动delete,否则内存泄露。Java则有著名的垃圾回收; C++传参可以传值和传引用,也可以配合指针传对象地址,自己来决定。...
分类:编程语言   时间:2014-05-07 08:45:33    阅读次数:353
sql语句执行顺序
一、逻辑查询处理的各个阶段 (5)SELECT DISTINCT TOP()                        (1)FROM JOIN ON   (2)WHERE (3)GROUP BY (4)HAVING (6)ORDER BY 上边语句是一个普通格式的查询语句,基本包含了所有的查询条件和关键字。你可能会发现前边的序号并不是按顺序来的,被你说对了,这...
分类:数据库   时间:2014-05-07 08:26:11    阅读次数:476
Sql_Server中如何判断表中某列是否存在
/*判断表AA中是否存在AA_ID这一列,如果不存在,则新增*/ IF NOT EXISTS (SELECT 1 FROM syscolumns INNER JOIN sysobjects ON sysobjects.id = syscolumns.id WHERE syscolumns.name = 'AA_ID' AND sysobjects.name = 'AA') ALTER TA...
分类:数据库   时间:2014-05-07 07:33:47    阅读次数:373
数字图像和视频处理的基础-第5周中值滤波PSNR练习题
In this problem you will perform median filtering to enhance the quality of a noise corrupted image. Recall from the video lecture that median filtering is effective for removing "salt-and-pepper" n...
分类:其他好文   时间:2014-05-07 07:20:09    阅读次数:326
HTTP和Java
1.HTTP的四种交互 GET:查 POST:改 PUT:增 DELETE:删 一般来说只使用GET/POST 2.HTTP头(分为请求头和响应头) 请求头: 格式如下: request-line> headers> blank line> [request-body>] 请求行(request line):用来说明请求类型...
分类:编程语言   时间:2014-05-07 06:09:40    阅读次数:434
travel the binary tree by level 5 ( from down to top and from left to right every level )
travel the binary tree by level 5 ( from down to top and from left to right every level ) 个人信息:就读于燕大本科软件工程专业 目前大三; 本人博客:google搜索“cqs_2012”即可; 个人爱好:酷爱数据结构和算法,希望将来从事算法工作为人民作出自己的贡献; 博客内容:tr...
分类:其他好文   时间:2014-05-07 05:40:19    阅读次数:401
LeetCode合集
一 线性表 1.1  数组 1.1.1 Remove Duplicates from Sorted Array 1.1.2 Remove Duplicates from Sorted Array II 1.1.3 Search in Rotated Sorted Array 1.1.4 Search in Rotated Sorted Array II 1.1.5 Median of...
分类:其他好文   时间:2014-05-07 04:24:26    阅读次数:363
codechef Popular Rice Recipe题解
Popular Rice Recipe Did you know that there are over 40,000 varieties of Rice in the world ? There are so many dishes that can be prepared with Rice too. A famous chef from Mumbai, Tid Gusto prep...
分类:其他好文   时间:2014-05-07 04:05:46    阅读次数:428
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