0085.maximal-rectangle

README

Given a rows x cols binary matrix filled with 0's and 1's, find the largest rectangle containing only 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

Constraints:

rows == matrix.length cols == matrix[i].length 1 <= row, cols <= 200 matrix[i][j] is '0' or '1'.