Package g0201_0300.s0221_maximal_square

Class Solution

java.lang.Object
g0201_0300.s0221_maximal_square.Solution
public class Solution extends java.lang.Object
221 - Maximal Square.

Medium

Given an m x n binary matrix filled with 0’s and 1’s, find the largest square 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: 4

Example 2:

Input: matrix = [[“0”,“1”],[“1”,“0”]]

Output: 1

Example 3:

Input: matrix = [[“0”]]

Output: 0

Constraints:

  • m == matrix.length
  • n == matrix[i].length
  • 1 <= m, n <= 300
  • matrix[i][j] is '0' or '1'.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

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

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • maximalSquare

      public int maximalSquare(char[][] matrix)