1、问题描述 Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example,[1,1,2] have the following un ...
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其他好文 时间:
2017-08-31 11:07:36
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188
题目Given a 2D binary matrix filled with 0’s and 1’s, find the largest rectangle containing all ones and return its area.思路对于上图的一个01矩阵。我们可以一行一行的分析,假设第三行,我们按列扫描,遇到0时,柱子断开,重新形成柱子,遇到1时柱子高度加一。这样的话,我们就可以把问题转换...
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其他好文 时间:
2015-05-14 22:05:23
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137
problem:
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.
For example,
...
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其他好文 时间:
2015-04-28 18:36:50
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140