最大正方形

221. 最大正方形 (Medium)

在一个由 '0''1' 组成的二维矩阵内,找到只包含 '1' 的最大正方形,并返回其面积。

 

示例 1:

输入:matrix = [["1","0","1","0","0"],["1","0","1","1","1"],["1","1","1","1","1"],["1","0","0","1","0"]]
输出:4

示例 2:

输入:matrix = [["0","1"],["1","0"]]
输出:1

示例 3:

输入:matrix = [["0"]]
输出:0

 

提示:

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

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