Package g0001_0100.s0085_maximal_rectangle

Class Solution

java.lang.Object
g0001_0100.s0085_maximal_rectangle.Solution
public class Solution extends Object
85 - Maximal Rectangle.

Hard

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 = []

Output: 0

Example 3:

Input: matrix = [[“0”]]

Output: 0

Example 4:

Input: matrix = [[“1”]]

Output: 1

Example 5:

Input: matrix = [[“0”,“0”]]

Output: 0

Constraints:

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • maximalRectangle

      public int maximalRectangle(char[][] matrix)