3142 - Check if Grid Satisfies Conditions.

Easy

You are given a 2D matrix grid of size m x n. You need to check if each cell grid[i][j] is:

• Equal to the cell below it, i.e. grid[i][j] == grid[i + 1][j] (if it exists).

• Different from the cell to its right, i.e. grid[i][j] != grid[i][j + 1] (if it exists).

Return true if all the cells satisfy these conditions, otherwise, return false.

Example 1:

Input: grid = [1,0,2,1,0,2]

Output: true

Explanation:

All the cells in the grid satisfy the conditions.

Example 2:

Input: grid = [1,1,1,0,0,0]

Output: false

Explanation:

All cells in the first row are equal.

Example 3:

Input: grid = [1,2,3]

Output: false

Explanation:

Cells in the first column have different values.

Constraints:

• 1 <= n, m <= 10

• 0 <= grid[i][j] <= 9