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Leetcode#130 Surrounded Regions
原题地址1. 把所有与边界联通的"O"替换成别的字符,比如"#"2. 把剩下的所有"O"替换成"X"3. 把所有与边界联通的"#"替换成"X"代码: 1 void replace(vector > &board, int i, int j, char before, char after) { 2 ...
分类:其他好文   时间:2015-01-24 18:44:15    阅读次数:167
【leetcode】Surrounded Regions
Surrounded RegionsGiven a 2D board containing'X'and'O', capture all regions surrounded by'X'.A region is captured by flipping all'O's into'X's in that...
分类:其他好文   时间:2015-01-21 22:17:26    阅读次数:180
[LeetCode] Surrounded Regions 广度搜索
Given a 2D board containing'X'and'O', capture all regions surrounded by'X'.A region is captured by flipping all'O's into'X's in that surrounded region...
分类:其他好文   时间:2015-01-05 20:23:28    阅读次数:204
【Algorithm】回溯法与深度优先遍历的异同
1、相同点:回溯法在实现上也是遵循深度优先的,即一步一步往前探索,而不像广度优先那样,由近及远一片一片地扫。2、不同点(1)访问序深度优先遍历: 目的是“遍历”,本质是无序的。也就是说访问次序不重要,重要的是都被访问过了。可以参见题Surrounded Regions,深度优先只需要把从边界起始的....
分类:其他好文   时间:2014-12-27 11:23:35    阅读次数:359
Surrounded Regions
该题目主要考察了堆栈和深度优先搜索的知识点。在递归深度太深导致运行出错是,可以采用栈保存结果,减小递归的深度。详细代码如下:class Solution {public: stack> data; void solve(vector> &board) { if(board...
分类:其他好文   时间:2014-12-26 21:38:20    阅读次数:129
Surrounded Regions
Surrounded RegionsGiven a 2D board containing'X'and'O', capture all regions surrounded by'X'.A region is captured by flipping all'O's into'X's in that...
分类:其他好文   时间:2014-12-18 01:39:32    阅读次数:168
UVALive 4992 Jungle Outpost(半平面交判存)
Jungle OutpostTime limit: 15.000 secondsDescriptionThere is a military base lost deep in the jungle. It is surrounded bynwatchtowers with ultrasonic g...
分类:其他好文   时间:2014-12-08 21:04:51    阅读次数:264
careercup-递归和动态规划 9.7
9.7 编写函数,实现许多图片编辑软件都支持的“填充颜色”功能。给定一个屏幕(以二维数组表示,元素为颜色值)、一个点和一个新的颜色值,将新颜色值填入这个点的周围区域,直到原来的颜色值全部改变。类似leetcode:Surrounded Regions解法:首先,想象一下这个方法是怎么回事。假设要对一...
分类:其他好文   时间:2014-12-08 10:34:58    阅读次数:116
leetcode[130] Surrounded Regions
给定一个类似棋盘,有X和O,把X圈住的O变为X例如:For example,X X X XX O O XX X O XX O X XAfter running your function, the board should be:X X X XX X X XX X X XX O X X其实这题的思路...
分类:其他好文   时间:2014-12-07 01:18:26    阅读次数:137
Surrounded Regions
Given a 2D board containing'X'and'O', capture all regions surrounded by'X'.A region is captured by flipping all'O's into'X's in that surrounded region...
分类:其他好文   时间:2014-12-03 13:52:47    阅读次数:194
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