private void print(int arr[][]){
        for(int i=0; i < arr.length; i++){
            for(int j=0; j < arr.length; j++){
                System.out.print(arr[i][j] + " ");
            }
            System.out.print("\n");
        }
    }
Date 07/31/2016
@author Tushar Roy

You are given an n x n 2D matrix representing an image.
Rotate the image by 90 degrees (clockwise).

https://leetcode.com/problems/rotate-image/
src/com/interview/multiarray/RotateImage.java