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[leetcode]Unique Paths
Unique PathsA 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 a...
分类:其他好文   时间:2014-08-09 00:02:06    阅读次数:201
[leetcode]Unique Paths II
Unique Paths IIFollow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?An obstacle an...
分类:其他好文   时间:2014-08-08 23:55:17    阅读次数:263
[LeetCode: 题解] Combination Sum
Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.The same repeate...
分类:其他好文   时间:2014-08-08 20:54:46    阅读次数:246
Permutations II leetcode java
题目:Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2] have the following unique....
分类:编程语言   时间:2014-08-08 01:54:55    阅读次数:292
mnesia 动态改变数据库字段
create() ->mnesia:create_table(?ID_TABLE, [{disc_copies, [node()]}, {attributes, record_info(fields, unique_id)}]),Fun = fun(Old) ->#game_server_data{...
分类:数据库   时间:2014-08-07 21:43:30    阅读次数:241
Hibernate之实体类配置
1、@Column属性(1)设置字段属性唯一@Column(unique=true)private String name;Done
分类:系统相关   时间:2014-08-07 18:36:40    阅读次数:266
boost uuid
uuid:uuid库是一个小的使用工具,可以表示和生成UUIDUUID是University Unique Identifier的缩写,它是一个128位的数字(16字节),不需要有一个中央认证机构就可以创建全国唯一的标示符。别名:GUIDuuid位于名字空间boost::uuisd,没有集中的头文件...
分类:其他好文   时间:2014-08-07 15:38:30    阅读次数:259
[LeetCode] Unique Binary Search Trees II (难以忍受的递归)
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n.For example, Given n = 3, your program should return all...
分类:其他好文   时间:2014-08-07 00:16:36    阅读次数:276
Innodb parent table open时导致crash
case描述: innodb中,父表和子表通过foreign constraint进行关联, 因为在更新数据时需要check 外键constraint,如果父表被大量的子表reference, 那么在open的时候,需要open所有的child table和所有的foreign const...
分类:数据库   时间:2014-08-06 18:38:21    阅读次数:298
去除数组中的重复数据
1 public static String[] array_unique(String[] a) {2 Set set = new HashSet();3 set.addAll(Arrays.asList(a));4 return set.toArray(new String[0]);5 }
分类:其他好文   时间:2014-08-06 18:38:11    阅读次数:215
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