Package g2101_2200.s2133_check_if_every_row_and_column_contains_all_numbers

Class Solution

java.lang.Object
g2101_2200.s2133_check_if_every_row_and_column_contains_all_numbers.Solution
public class Solution extends Object
2133 - Check if Every Row and Column Contains All Numbers.<p>Easy</p> <p>An <code>n x n</code> matrix is <strong>valid</strong> if every row and every column contains <strong>all</strong> the integers from <code>1</code> to <code>n</code> ( <strong>inclusive</strong> ).</p> <p>Given an <code>n x n</code> integer matrix <code>matrix</code>, return <code>true</code> <em>if the matrix is <strong>valid</strong>.</em> Otherwise, return <code>false</code>.</p> <p><strong>Example 1:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2021/12/21/example1drawio.png" alt="" /></p> <p><strong>Input:</strong> matrix = [[1,2,3],[3,1,2],[2,3,1]]</p> <p><strong>Output:</strong> true</p> <p><strong>Explanation:</strong> In this case, n = 3, and every row and column contains the numbers 1, 2, and 3. Hence, we return true.</p> <p><strong>Example 2:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2021/12/21/example2drawio.png" alt="" /></p> <p><strong>Input:</strong> matrix = [[1,1,1],[1,2,3],[1,2,3]]</p> <p><strong>Output:</strong> false</p> <p><strong>Explanation:</strong> In this case, n = 3, but the first row and the first column do not contain the numbers 2 or 3. Hence, we return false.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>n == matrix.length == matrix[i].length</code></li> <li><code>1 <= n <= 100</code></li> <li><code>1 <= matrix[i][j] <= n</code></li> </ul>

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • checkValid

      public boolean checkValid(int[][] matrix)