Rotate Image

1class Solution {
2    public void rotate(int[][] matrix) {
3        // reverse
4        int size = matrix.length;
5        for (int i = 0; i < size / 2; i++)
6        {
7            int[] temp = matrix[i];
8            matrix[i] = matrix[size - i - 1];
9            matrix[size - i - 1] = temp;
10        }
11
12        // finish rotation
13        for (int i = 0; i < size; i++)
14        {
15            for (int j = i + 1; j < size; j++)
16            {
17                int temp = matrix[i][j];
18                matrix[i][j] = matrix[j][i];
19                matrix[j][i] = temp;
20            }
21        }
22    }
23}