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Leetcode: Graph Valid Tree && Summary: Detect cycle in directed graph and undirected graph
Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to check whether these edges mak...
分类:其他好文   时间:2015-12-24 07:05:51    阅读次数:466
CSU - 1356 Catch(dfs染色两种写法,和hdu4751比较)
DescriptionA thief is running away!We can consider the city where he locates as an undirected graph in which nodes stand for crosses and edges stand f...
分类:其他好文   时间:2015-12-04 22:50:10    阅读次数:219
261. Graph Valid Tree
题目:Givennnodes labeled from0ton - 1and a list of undirected edges (each edge is a pair of nodes), write a function to check whether these edges make u...
分类:其他好文   时间:2015-12-04 12:32:37    阅读次数:266
HackerRank "Kundu and Tree" !!
Learnt from here:http://www.cnblogs.com/lautsie/p/3798165.htmlIdea is: we union all pure black edges so we get 1+ pure black edge groups. Then we can ...
分类:其他好文   时间:2015-11-26 06:55:44    阅读次数:157
OpenCV图像Canny边缘检测
Canny边缘检测 图像的边缘检测的原理是检测出图像中所有灰度值变化较大的点,而且这些点连接起来就构成了若干线条,这些线条就可以称为图像的边缘函数原型: void cvCanny( const CvArr* image, //第一个参数表示输入图像,必须为单通道灰度图 CvArr* edges,.....
分类:其他好文   时间:2015-11-21 13:11:48    阅读次数:163
tableView 显示区域偏移
在SB拖了一个tableView , 在显示的时候显示区域和tableView的区域不一致, (UITableViewWrapperView 和 UITableView frame不一致)在SB上看一下Controller的 Extend Edges中 的Under Top Bars 是否选中, 取...
分类:其他好文   时间:2015-11-13 11:41:31    阅读次数:237
hihoCoder #1245 WPH and Triangles
DescriptionWPH has a triangle whose three edges are of length a, b, c.He has super power to enlarge the edges, but the total length that was enlarged ...
分类:其他好文   时间:2015-11-02 15:16:40    阅读次数:214
Articulation Points (or Cut Vertices) in a Graph
A vertex in an undirected connected graph is an articulation point (or cut vertex) iff removing it (and edges through it) disconnects the graph.Articu...
分类:其他好文   时间:2015-10-18 19:48:19    阅读次数:262
SPOJ Query on a tree 树链剖分 水题
You are given a tree (an acyclic undirected connected graph) withNnodes, and edges numbered 1, 2, 3...N-1.We will ask you to perfrom some instructions...
分类:其他好文   时间:2015-10-15 20:19:36    阅读次数:220
IOS UIButton(UIEdgeInsets)/设置图片和文字上下垂直居中对齐
UIEdgeInsetstypedef struct UIEdgeInsets { CGFloat top, left, bottom, right; // specify amount to inset (positive) for each of the edges. values ca...
分类:移动开发   时间:2015-10-14 10:15:03    阅读次数:193
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