Maximal Square
Given a binary matrix, find out the largest size square sub-matrix with all 1's and return its area.
Example:
Input:
| 1 | 0 | 1 | 0 | 0 |
|---|---|---|---|---|
| 1 | 0 | 1 | 1 | 1 |
| 1 | 1 | 1 | 1 | 0 |
| 1 | 0 | 0 | 1 | 0 |
Output:
4Try it yourself
Title
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>>> a = [1, 2, 3]
>>> a[-1]
3