Hard

Quiz

#85 Maximal Rectangle

APPROACH

Find the largest rectangle containing only '1's in a binary matrix of '0's and '1's 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: 6

Explanation: The maximal rectangle is shown in the above picture.

Example 2:

Input: matrix = [["0"]]

Output: 0

Example 3:

Input: matrix = [["1"]]

Output: 1

1 of 4

1:00

What is the optimal approach for this problem?