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 ...
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其他好文 时间:
2014-05-10 09:34:09
阅读次数:
389
在Silverlight中实施RESTful调用:
http://book.51cto.com/art/201006/206314.htm
http://bbs.csdn.net/topics/320039569http://www.cyqdata.com/cnblogs/article-detai...
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Web程序 时间:
2014-05-07 19:23:01
阅读次数:
353
Select Top在不同数据库中的使用用法:1. Oracle数据库 SELECT * FROM
TABLE1 WHERE ROWNUM<=N2. Infomix数据库 SELECT FIRST N * FROM TABLE13. DB2数据库
SELECT * ROW_NUMBER() OVER...
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数据库 时间:
2014-05-07 19:12:48
阅读次数:
366
SQL Server获取指定行(如第二行)的数据--SQL
Server获取指定行(如第二行)的数据----法一(对象法)--select * from(select * , number = row_number()
over(orderby Grade desc) from Students)m...
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数据库 时间:
2014-05-07 18:41:48
阅读次数:
517
MySQL中表之间的链接语句:关键词:INNER JOIN格式:SELECT 列名表 FROM
表名1 [INNER] JOIN 表名2 ON或WHERE条件表达式
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数据库 时间:
2014-05-07 09:08:18
阅读次数:
342
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...
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其他好文 时间:
2014-05-07 08:48:52
阅读次数:
515
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...
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数据库 时间:
2014-05-07 08:26:11
阅读次数:
476
/*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...
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数据库 时间:
2014-05-07 07:33:47
阅读次数:
373
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...
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其他好文 时间:
2014-05-07 07:20:09
阅读次数:
326
今天打算做两道半平面交,一题卡太久了,心都碎了。。。#pragma
warning(disable:4996)#include #include #include #include #include #include
#include using namespace std;#define maxn...
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其他好文 时间:
2014-05-06 12:27:57
阅读次数:
389