Find Zero Cells in a 2×2 Grid
Roblox● EasyFULLTIMEOAProblem statement
You are given an integer grid with exactly two rows and two columns. Find every cell whose value equals 0.
For this exercise, assume the result contains zero-based coordinate pairs [row, column], ordered by increasing row and then increasing column. Return an empty array when the grid contains no zeros. Inspect cells independently; neighboring zeros still produce separate coordinate pairs.
Function
findZeroCells(grid: int[][]) → int[][]Examples
Example 1
grid = [[0,4],[3,0]]return = [[0,0],[1,1]]The zero cells are the top-left and bottom-right cells.
Example 2
grid = [[5,1],[9,2]]return = []Every value is nonzero, so the result is empty.
Example 3
grid = [[0,0],[0,0]]return = [[0,0],[0,1],[1,0],[1,1]]All four cells are reported in row-major order.
Constraints
grid.length = 2.grid[0].length = grid[1].length = 2.-10^9 <= grid[row][column] <= 10^9.