Objective

Implement mirror_rows, a function that reverses every row of a 2D list.

Steps

• Create row_mirror.py.
• Expose def mirror_rows(grid: list[list[int]]) -> list[list[int]]:.
• Return a new 2D list where each row is reversed.
• Keep the original row order.
• Handle rectangular grids, single-row grids, empty rows, and an empty grid.
• Do not mutate the input grid.

Objective

Implement mirror_rows, a function that reverses every row of a 2D list.

Steps

• Create row_mirror.py.
• Expose def mirror_rows(grid: list[list[int]]) -> list[list[int]]:.
• Return a new 2D list where each row is reversed.
• Keep the original row order.
• Handle rectangular grids, single-row grids, empty rows, and an empty grid.
• Do not mutate the input grid.