Medium

Quiz

#221 Maximal Square

APPROACH

In an m x n binary matrix of '0's and '1's, locate the largest all-ones square and return its area.

Example 1:

Input: matrix = [["1","0","1","0","0"],["1","0","1","1","1"],["1","1","1","1","1"],["1","0","0","1","0"]]

Output: 4

Example 2:

Input: matrix = [["0","1"],["1","0"]]

Output: 1

Example 3:

Input: matrix = [["0"]]

Output: 0

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1:00

What is the optimal approach for this problem?