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A + B Again
A + B Again Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 16204 Accepted Submission(s): 6996 Problem Description There must be many A + ...
分类:其他好文   时间:2014-11-30 10:22:38    阅读次数:239
Hibernate4.x之映射关系--一对一映射
Hibernate的1-1映射关系主要分为两类: 1.Hibernate基于外键映射的1对1关联关系 对于基于外键的1-1关联,其外键可以存放在任意一边,在需要存放外键一端,增加many-to-one元素。为many-to-one元素增加unique="true"属性表示为1-1关联1 另一端...
分类:Web程序   时间:2014-11-29 22:57:11    阅读次数:286
cigarettes
描述Tom has many cigarettes. We hypothesized that he has n cigarettes and smokes themone by one keeping all the butts. Out of k > 1 butts he can roll a ...
分类:其他好文   时间:2014-11-29 20:11:07    阅读次数:140
soj 12646. ORCHARD
12646. ORCHARDConstraintsTime Limit: 3 secs, Memory Limit: 256 MBDescriptionAlex and Bert are brothers who had been working for many years in a big or...
分类:其他好文   时间:2014-11-29 14:26:53    阅读次数:139
Hibernate-----多对多关联映射(注解)
多对多映射采取中间表连接的映射策略,建立的中间表将分别引入两边的主键作为外键 Many import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.p...
分类:Web程序   时间:2014-11-29 13:19:26    阅读次数:190
Hibernate-----一对一唯一外键关联映射(注解)
双向关联映射: One(‘Many’) import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.Generation...
分类:Web程序   时间:2014-11-29 13:18:18    阅读次数:253
LeetCode Climbing Stairs
You are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?思路分析:考察DP,定义ClimbWays数组,ClimbWays[n]...
分类:其他好文   时间:2014-11-29 07:06:29    阅读次数:175
Leetcode-Climbing Stairs
You are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you cli...
分类:其他好文   时间:2014-11-29 07:04:53    阅读次数:187
Leetcode-Unique Binary Search Trees
Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example,Given n = 3, there are a total of 5 unique BST'...
分类:其他好文   时间:2014-11-29 06:36:51    阅读次数:160
linux Argument list too long错误解决方法
今日需要删除/tmp目录下的所有文件,文件数量比较多。 ls -lt /tmp | wc -l385412 使用 rm * 后,系统提示错误 Argument list too long 原因是在linux下,试图传太多参数给一个系统命令(ls *; cp *; rm *; cat *; etc..)时,就会出现 Argument list too long错误。...
分类:系统相关   时间:2014-11-29 00:19:15    阅读次数:273
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