Algorithm to rotate an image 90 degrees in place? (No extra memory)

Question

In an embedded C app, I have a large image that I\'d like to rotate by 90 degrees. Currently I use the well-known simple algorithm to do this. However, this algorithm requi

Answer 1

Here is a simple method in java,

    public static void rotateMatrix(int[][] a) {                                                                            
    int m =0;
    for(int i=0; i=end)
                break;
            int tmp = a[i][j];
            a[i][j] = a[i][end];
            a[i][end] = tmp;
            end--;
        }
    }
}