leetle

15. Matrix Rotation

Write a function solve that rotates an n x n matrix 90 degrees clockwise in-place.

Example: Input: [ [1,2,3], [4,5,6], [7,8,9]] Output: [ [7,4,1], [8,5,2], [9,6,3]]

Make sure you return your solution, don't print!

def solve(matrix):
    pass