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【STL】关联容器 — hash_set
容器hash_set是以hash table为底层机制的,差点儿所有的操作都是转调用hash table提供的接口。因为插入无法存储同样的键值,所以hash_set的插入操作所有都使用hash table的insert_unique接口,代码例如以下:pair insert(const value_...
分类:其他好文   时间:2014-11-06 19:04:34    阅读次数:200
Unique Paths
A robot is located at the top-left corner of amxngrid (marked 'Start' in the diagram below).The robot can only move either down or right at any point ...
分类:其他好文   时间:2014-11-06 17:09:15    阅读次数:227
hibernate(jpa)中注解配置字段为主键
http://www.blogjava.net/ITdavid/archive/2009/02/25/256605.html注解方式的主键配置非自增字段为主键,注解annotation表示以N_LOG_ID字段为例:@Id@Column(name = "N_LOG_ID", unique = tru...
分类:Web程序   时间:2014-11-06 17:03:24    阅读次数:200
Unique Paths II
Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?An obstacle and empty space i...
分类:其他好文   时间:2014-11-06 16:53:40    阅读次数:145
使用sql语句创建和删除约束
使用sql语句创建和删除约束约束类型主键约束(Primary Key constraint) --:要求主键列数据唯一,而且不同意为空。唯一约束(Unique constraint) --:要求该列唯一,同意为空,但仅仅能出现一个空值。检查约束(Check constraint) --:某列取值范围...
分类:数据库   时间:2014-11-06 14:19:37    阅读次数:131
How to count the occurrences of a number?
I have a file, consisting of a column of numbers, some of which are the same, Iwant to count the occurrences of each unique number, here is the simple...
分类:其他好文   时间:2014-11-06 14:19:06    阅读次数:200
POJ3270 Cow Sorting
DescriptionFarmer John'sN(1 ≤N≤ 10,000) cows are lined up to be milked in the evening. Each cow has a unique "grumpiness" level in the range 1...100,0...
分类:其他好文   时间:2014-11-05 16:53:49    阅读次数:204
ASP.NET MVC4 学习系统二(路由)
哎 昨天写的笔记忘记保存了就帖个图片吧配置路由 ASP.NET MVC路由负责确定由哪个控制器操作来处理特定的URL请求。它由以下属性组成。(Unique name 路由唯一的名字,URLpattern 将URL解析成有意义词语的简单模式语法,Defaults URL模式里定义的参数变量的默认值。)...
分类:Web程序   时间:2014-11-05 12:32:04    阅读次数:294
Hot Days Codeforces Round #132 (Div. 2) D(贪心)
Description The official capital and the cultural capital of Berland are connected by a single road running through n regions. Each region has a unique climate, so the i-th (1?≤?i?≤?n) region has...
分类:其他好文   时间:2014-11-04 17:33:03    阅读次数:169
LeetCode:Unique Paths
题目描述: A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to...
分类:其他好文   时间:2014-11-04 17:30:56    阅读次数:194
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