2319. Check if Matrix Is X-Matrix
Easy
10 Points
Array
Matrix
A square matrix is said to be an X-Matrix if both of the following conditions hold:
Given a 2D integer array grid of size n x n representing a square matrix, return true if grid is an X-Matrix. Otherwise, return false.
Examples
Example 1
Input: grid = [[2,0,0,1],[0,3,1,0],[0,5,2,0],[4,0,0,2]]
Output: true
Explanation: Refer to the diagram above.
An X-Matrix should have the green elements (diagonals) be non-zero and the red elements be 0.
Thus, grid is an X-Matrix.
Example 2
Input: grid = [[5,7,0],[0,3,1],[0,5,0]]
Output: false
Explanation: Refer to the diagram above.
An X-Matrix should have the green elements (diagonals) be non-zero and the red elements be 0.
Thus, grid is not an X-Matrix.
Constraints
n == grid.length == grid[i].length3 <= n <= 1000 <= grid[i][j] <= 105
2319. Check if Matrix Is X-Matrix
Easy
10 Points
Array
Matrix
A square matrix is said to be an X-Matrix if both of the following conditions hold:
Given a 2D integer array grid of size n x n representing a square matrix, return true if grid is an X-Matrix. Otherwise, return false.
Examples
Example 1
Input: grid = [[2,0,0,1],[0,3,1,0],[0,5,2,0],[4,0,0,2]]
Output: true
Explanation: Refer to the diagram above.
An X-Matrix should have the green elements (diagonals) be non-zero and the red elements be 0.
Thus, grid is an X-Matrix.
Example 2
Input: grid = [[5,7,0],[0,3,1],[0,5,0]]
Output: false
Explanation: Refer to the diagram above.
An X-Matrix should have the green elements (diagonals) be non-zero and the red elements be 0.
Thus, grid is not an X-Matrix.
Constraints
n == grid.length == grid[i].length3 <= n <= 1000 <= grid[i][j] <= 105