Package g0201_0300.s0221_maximal_square

Class Solution

java.lang.Object

g0201_0300.s0221_maximal_square.Solution

public class Solution
extends Object

221 - Maximal Square.<p>Medium</p> <p>Given an <code>m x n</code> binary <code>matrix</code> filled with <code>0</code>&rsquo;s and <code>1</code>&rsquo;s, <em>find the largest square containing only</em> <code>1</code>&rsquo;s <em>and return its area</em>.</p> <p><strong>Example 1:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2020/11/26/max1grid.jpg" alt="" /></p> <p><strong>Input:</strong> matrix = [[&ldquo;1&rdquo;,&ldquo;0&rdquo;,&ldquo;1&rdquo;,&ldquo;0&rdquo;,&ldquo;0&rdquo;],[&ldquo;1&rdquo;,&ldquo;0&rdquo;,&ldquo;1&rdquo;,&ldquo;1&rdquo;,&ldquo;1&rdquo;],[&ldquo;1&rdquo;,&ldquo;1&rdquo;,&ldquo;1&rdquo;,&ldquo;1&rdquo;,&ldquo;1&rdquo;],[&ldquo;1&rdquo;,&ldquo;0&rdquo;,&ldquo;0&rdquo;,&ldquo;1&rdquo;,&ldquo;0&rdquo;]]</p> <p><strong>Output:</strong> 4</p> <p><strong>Example 2:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2020/11/26/max2grid.jpg" alt="" /></p> <p><strong>Input:</strong> matrix = [[&ldquo;0&rdquo;,&ldquo;1&rdquo;],[&ldquo;1&rdquo;,&ldquo;0&rdquo;]]</p> <p><strong>Output:</strong> 1</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> matrix = [[&ldquo;0&rdquo;]]</p> <p><strong>Output:</strong> 0</p> <p><strong>Constraints:</strong></p> <ul> <li><code>m == matrix.length</code></li> <li><code>n == matrix[i].length</code></li> <li><code>1 <= m, n <= 300</code></li> <li><code>matrix[i][j]</code> is <code>'0'</code> or <code>'1'</code>.</li> </ul>

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)