| { |
| "id": 2254, |
| "name": "check-if-every-row-and-column-contains-all-numbers", |
| "difficulty": "Easy", |
| "link": "https://leetcode.com/problems/check-if-every-row-and-column-contains-all-numbers/", |
| "date": "2022-01-02", |
| "task_description": "An `n x n` matrix is **valid** if every row and every column contains **all** the integers from `1` to `n` (**inclusive**). Given an `n x n` integer matrix `matrix`, return `true` _if the matrix is **valid**._ Otherwise, return `false`. **Example 1:** ``` **Input:** matrix = [[1,2,3],[3,1,2],[2,3,1]] **Output:** true **Explanation:** In this case, n = 3, and every row and column contains the numbers 1, 2, and 3. Hence, we return true. ``` **Example 2:** ``` **Input:** matrix = [[1,1,1],[1,2,3],[1,2,3]] **Output:** false **Explanation:** 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. ``` **Constraints:** `n == matrix.length == matrix[i].length` `1 <= n <= 100` `1 <= matrix[i][j] <= n`", |
| "test_case": [ |
| { |
| "label": "Example 1", |
| "input": "matrix = [[1,2,3],[3,1,2],[2,3,1]]", |
| "output": "true " |
| }, |
| { |
| "label": "Example 2", |
| "input": "matrix = [[1,1,1],[1,2,3],[1,2,3]]", |
| "output": "false " |
| } |
| ], |
| "constraints": [ |
| "n == matrix.length == matrix[i].length", |
| "1 <= n <= 100", |
| "1 <= matrix[i][j] <= n" |
| ], |
| "python_template": "class Solution(object):\n def checkValid(self, matrix):\n \"\"\"\n :type matrix: List[List[int]]\n :rtype: bool\n \"\"\"\n ", |
| "java_template": "class Solution {\n public boolean checkValid(int[][] matrix) {\n \n }\n}", |
| "metadata": { |
| "func_name": "checkValid" |
| } |
| } |
