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Timus 1446. Sorting Hat 分类问题
At the start of each school year, a very important event happens at Hogwarts. Each of the first-year wizards and witches is assigned to one of the four Hogwarts houses. The bravest children are put ...
分类:其他好文   时间:2014-04-29 13:38:20    阅读次数:459
VM启动报错Cannot open the disk,Failed to lock the file
在windows下运行VMware创建的虚拟机时出错,无法运行。 错误提示大概为: Failed to lock the file Cannot open the disk 'D:\Windows Server 2008 R2 x64.vmdk' or one of the snapshot disks it depends on. 解决方法:        把虚拟机文件夹里【.lck】...
分类:其他好文   时间:2014-04-29 13:28:21    阅读次数:366
This Android SDK requires Developer Toolkit version 22.6.2 or above
question:  This Android SDK requires Developer Toolkit version 22.6.2 or above please update ADT to the latest version answer: 1.Start Eclipse, then select Help > Install New Software.... 2....
分类:移动开发   时间:2014-04-29 13:18:20    阅读次数:454
Hdu 1042 N! (高精度数)
Problem Description Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N!   Input One N in one line, process to the end of file.   Output For each N, output N! i...
分类:其他好文   时间:2014-04-28 10:36:41    阅读次数:341
CallableStatement简单使用
直接上存储过程、函数 --执行不带参数但带返回值的存储过程 CREATE OR REPLACE PROCEDURE proc_getUserCount(v_totalCount OUT NUMBER) AS BEGIN SELECT COUNT(*) INTO v_totalCount FROM vote_user; END; --测试不带参数但带返回值的存储过程 DECLARE v_t...
分类:其他好文   时间:2014-04-28 10:25:43    阅读次数:461
避免nrpe端进程监控多个接口
为了避免目标端nrpe进程监控多个接口而造成的安全漏洞。有必要固定服务端的地址,对nrpe.cfg配置中,有下列一行介绍 #SERVER ADDRESS # Address that nrpe should bind to in case there are more than one interface # and you do not want nrpe to bind on all in...
分类:其他好文   时间:2014-04-27 22:36:17    阅读次数:454
hdu1211
RSA is one of the most powerful methods to encrypt data. The RSA algorithm is described as follow: > choose two large prime integer p, q > calculate n = p × q, calculate F(n) = (p - 1) × (q - 1) ...
分类:其他好文   时间:2014-04-27 21:37:59    阅读次数:315
任意一条查询sql转换为查询结果集对应的数目
原思路: 像括号配对一样,如果遇见select 就入栈,如果遇见from就出栈,直到栈为空,取得此时的位置,进行字符串截取。 实现方法:遇见字符s并且连续后5个字符elect 就+1,遇见字符f并且连续3个字符为rom就-1,当计数器结果为0时,返回当前字符的位置,然后进行字符串截取即可: /**** * 获取截取位置 * @param selectSQL * @retur...
分类:数据库   时间:2014-04-27 21:18:07    阅读次数:406
mysql常用查询:group by,左连接,子查询,having where
前几天去了两个比较牛的互联网公司面试,在sql这块都遇到问题了,哎,可惜呀,先把简单的梳理一下 成绩表 score 1、group by 使用 按某一个维度进行分组 例如: 求每个同学的总分 SELECT student,SUM(score) FROM score GROUP BY student 求每个同学的平均分 SELECT student,AVG(score) FR...
分类:数据库   时间:2014-04-27 21:17:59    阅读次数:614
java Annotation原理
Annotations are one of the fundamental language changes introduced in Java SE5. They provide information that you need to fully describe your program, but that cannot be expressed in Java. Thus, anno...
分类:编程语言   时间:2014-04-27 21:14:59    阅读次数:431
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