Congruent Solutions .NET Developer interview questions

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]]