You are given an n x n 2D matrix representing an image, rotate the image by 90 degrees clockwise.
1
Example 1
Input:
[[1,2,3],[4,5,6],[7,8,9]]
Output:
[[7,4,1],[8,5,2],[9,6,3]]
2
Example 2
Input:
[[5,1,9,11],[2,4,8,10],[13,3,6,7],[15,14,12,16]]
Output:
[[15,13,2,5],[14,3,4,1],[12,6,8,9],[16,7,10,11]]