leetcode 85. Maximal Rectangle
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Given a 2D binary matrix filled with 0’s and 1’s, find the largest rectangle containing only 1’s and return its area.
For example, given the following matrix:
1 0 1 0 0
1 0 1 1 1
1 1 1 1 1
1 0 0 1 0
Return 6.
思路一:每个1进行扩展 o(M*N*X) x代表最大矩形的面积值
0 0
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