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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?...
分类:其他好文   时间:2014-08-17 15:39:42    阅读次数:221
《STL源码剖析》---stl_multimap.h阅读笔记
multimap和map的关系和multiset和set关系一样,multimap允许有重复的键值,它在使用底层数据结构红黑树用,插入操作用的是insert_equal,而不是insert_unique。...
分类:其他好文   时间:2014-08-17 11:46:12    阅读次数:262
Tree Operations 打印出有向图中的环
题目: You are given a binary tree with unique integer values on each node. However, the child pointers on each node may point to any other node in the tree including itself, introducing cycles into the...
分类:其他好文   时间:2014-08-17 09:11:11    阅读次数:301
Combination Sum
Given a set of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sums toT.Thesamerepeated num...
分类:其他好文   时间:2014-08-16 17:03:50    阅读次数:174
THINKPHP_动态验证validate()
$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...
分类:Web程序   时间:2014-08-16 01:12:29    阅读次数:480
[leetcode]Unique Binary Search Trees
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...
分类:其他好文   时间:2014-08-16 00:59:29    阅读次数:178
[leetcode]Unique Binary Search Trees II
Unique Binary Search Trees IIGivenn, generate all structurally uniqueBST's(binary search trees) that store values 1...n.For example,Givenn= 3, your pr...
分类:其他好文   时间:2014-08-15 23:44:29    阅读次数:280
UVALive 5881 Unique Encryption Keys【线段树】
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...
分类:其他好文   时间:2014-08-15 19:42:39    阅读次数:256
信号完整性之差分对设计6(后布线分析)
对已经完成布线的差分对进行后布线分析。 (1)执行菜单命令Analyze-Preferences,选择Interconnect Models,设置互连参数如图: (2)单击OK,关闭对话框。 (3)打开Allegro Constraint Manager,执行Tools-Options,弹出Options窗口,按图进行设置: (4)在Allegro Constraint M...
分类:其他好文   时间:2014-08-15 14:40:58    阅读次数:364
Unique Paths
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...
分类:其他好文   时间:2014-08-15 09:32:37    阅读次数:200
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