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UVA 10692 Huge Mod
Problem XHuge ModInput:standard inputOutput:standard outputTime Limit:1 secondThe operator for exponentiation is different from the addition, subtract...
分类:其他好文   时间:2014-05-01 09:03:35    阅读次数:540
Oracle按时间段分组统计
想要按时间段分组查询,首先要了解level,connect by,oracle时间的加减.关于level这里不多说,我只写出一个查询语句:----level 是一个伪例 select level from dual connect by level d.dt-2 group by d.dt ...
分类:数据库   时间:2014-05-01 08:09:44    阅读次数:415
[leetcode]Remove Nth Node From End of List @ Python
原题地址:http://oj.leetcode.com/problems/remove-nth-node-from-end-of-list/题意:Given a linked list, remove thenthnode from the end of list and return its he...
分类:编程语言   时间:2014-05-01 06:42:15    阅读次数:332
【Mysql】select
描述The SELECT statement is used to select data from a database.The result is stored in a result table, called the result-set.大意:select用来从数据库中挑选数据有以下两种形...
分类:数据库   时间:2014-05-01 06:14:32    阅读次数:467
oracle数据库备份
1. 文件查看数据文件、控制文件、日志文件查看如下:select file#, status, enabled, name from V$datafile;--查看数据文件select * from v$controlfile;--控制文件select * from v$logfile;--日志文件...
分类:数据库   时间:2014-05-01 04:49:13    阅读次数:471
SQL查询:『索引失效问题』
1、IN操作符用IN操作符写出来的SQL直观简单、易于理解。但是在where条件中使用IN操作符是低效的。例如下面这条查询语句:SELECT * FROM tab_a WHERE id IN(SELECT a_id FROM tab_b); 你认为它会怎么执行呢?先从tab_a表中遍历数据,然后拿每...
分类:数据库   时间:2014-05-01 03:28:11    阅读次数:756
Steve Jobs Stanford
I am honored to be with you today at your commencement from one of the finest universities in the world. I never graduated from college. Truth be told, this is the closest I've ever gotten to a colleg...
分类:其他好文   时间:2014-04-29 13:46:22    阅读次数:337
HDU 2295 DLX 二分
Radar Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2229    Accepted Submission(s): 888 Problem Description N cities of the Java Kin...
分类:其他好文   时间:2014-04-29 13:26:20    阅读次数:346
HDU-2850-Load Balancing(贪心)
Problem Description In the Wide Web World, Which web server was popular in web site? Apache, nginx, lighttpd? Baidu.com use Apache, and many web sites like 163.com use nginx. Why? Its configuration i...
分类:其他好文   时间:2014-04-29 13:24:20    阅读次数:355
XML From Action Script[AS中的XML学习笔记]
XML From Action Script[AS中的XML学习笔记]...
分类:其他好文   时间:2014-04-29 13:21:22    阅读次数:288
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