Description
Optimal Symmetric Paths
You have a grid of n rows and
n columns. Each of the unit squares contains a non-zero digit. You walk from the top-left square to the b...
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其他好文 时间:
2014-08-16 12:36:50
阅读次数:
332
$data=I(‘post.‘,‘‘,‘trim‘); $rules = array( ???? array(‘name‘,‘‘,‘数据名称已存在‘,0,‘unique‘,1), ???? //array(验证字段1,验证规则,错误提示,[验证条件,附加规则,验证时间]), ???? array(‘ver...
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Web程序 时间:
2014-08-16 01:12:29
阅读次数:
480
Unique Binary Search TreesGivenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a to...
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其他好文 时间:
2014-08-16 00:59:29
阅读次数:
178
Unique Binary Search Trees IIGivenn, generate all structurally uniqueBST's(binary search trees) that store values 1...n.For example,Givenn= 3, your pr...
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其他好文 时间:
2014-08-15 23:44:29
阅读次数:
280
题目:UVALive 5881 Unique Encryption Keys
分类:线段树,想法题
题意:给出n个数,然后有q次查询,每次查询 l---r 区间内有没有重复的数,有的话输出任意的,没有的话输出ok
分析:上去一看觉得这个题目可以不用线段树做,因为它是静态的,想了一个方法后来发现时不对的,后来规规矩矩用线段树了。
这个题目不能直接用线段树,否则的话无法...
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其他好文 时间:
2014-08-15 19:42:39
阅读次数:
256
Slash MazeBy filling a rectangle with slashes (/) and backslashes ( ), you can generate nice little mazes. Here is an example:As you can see, paths i....
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其他好文 时间:
2014-08-15 14:30:58
阅读次数:
272
POJ 3352 Road Construction POJ 3177 Redundant Paths(边双连通图 Tarjan+缩点)
ACM
题目地址:
POJ 3352 Road Construction
POJ 3177 Redundant Paths
题意:
问要添加几条边才能使所给无向图图变成边双连通图。
分析:
边连通度:使无向图G不连通的最少...
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其他好文 时间:
2014-08-15 12:54:58
阅读次数:
178
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 reach the bottom-right corner of the grid (marked 'Finish' in the diag...
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其他好文 时间:
2014-08-15 09:32:37
阅读次数:
200
Givenn, generate all structurally uniqueBST's(binary search trees) that store values 1...n.For example,Givenn= 3, your program should return all 5 uni...
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其他好文 时间:
2014-08-14 20:16:29
阅读次数:
219
Redundant Paths
Time Limit: 1000MS
Memory Limit: 65536K
Total Submissions: 9118
Accepted: 3925
Description
In order to get from one of the F (1 <= F <= 5,000) grazing...
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其他好文 时间:
2014-08-13 19:03:27
阅读次数:
264