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 Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	maximalRectangle(char[][] matrix)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

maximalRectangle

public int maximalRectangle(char[][] matrix)