48. 旋转图像

给定 matrix = 
[
  [1,2,3],
  [4,5,6],
  [7,8,9]
],

原地旋转输入矩阵，使其变为:
[
  [7,4,1],
  [8,5,2],
  [9,6,3]
]

给定 matrix =
[
  [ 5, 1, 9,11],
  [ 2, 4, 8,10],
  [13, 3, 6, 7],
  [15,14,12,16]
], 

原地旋转输入矩阵，使其变为:
[
  [15,13, 2, 5],
  [14, 3, 4, 1],
  [12, 6, 8, 9],
  [16, 7,10,11]
]

1  2  3            1  4  7
4  5  6   ---->    2  5  8
7  8  9            3  6  9

1  4  7            7  4  1
2  5  8   ---->    8  5  2
3  6  9            9  6  3

public void rotate(int[][] matrix) {
        //转置矩阵
        for (int i = 0; i < matrix.length; i++) {
            for (int j = i; j < matrix[0].length; j++) {
                int tmp = matrix[i][j];
                matrix[i][j] = matrix[j][i];
                matrix[j][i] = tmp;
            }
        }

        //水平交换
        for (int i = 0; i < matrix.length; i++) {
            int left = 0;
            int right = matrix[i].length - 1;
            while (left < right) {
                int tmp = matrix[i][left];
                matrix[i][left] = matrix[i][right];
                matrix[i][right] = tmp;
                left++;
                right--;
            }
        }
        System.out.print(1);

    }