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 + ...
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其他好文 时间:
2014-11-30 10:22:38
阅读次数:
239
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...
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Web程序 时间:
2014-11-29 22:57:11
阅读次数:
286
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 ...
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其他好文 时间:
2014-11-29 20:11:07
阅读次数:
140
12646. ORCHARDConstraintsTime Limit: 3 secs, Memory Limit: 256 MBDescriptionAlex and Bert are brothers who had been working for many years in a big or...
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其他好文 时间:
2014-11-29 14:26:53
阅读次数:
139
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...
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Web程序 时间:
2014-11-29 13:19:26
阅读次数:
190
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...
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Web程序 时间:
2014-11-29 13:18:18
阅读次数:
253
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]...
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其他好文 时间:
2014-11-29 07:06:29
阅读次数:
175
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...
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其他好文 时间:
2014-11-29 07:04:53
阅读次数:
187
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'...
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其他好文 时间:
2014-11-29 06:36:51
阅读次数:
160
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。...
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系统相关 时间:
2014-11-29 00:19:15
阅读次数:
273