rotate image

public class  {
    public void rotate(int[][] matrix) {
        
        for(int i=0; i<matrix.length; i++)
            for(int j=i;j<matrix.length;j++) {
                int temp = matrix[i][j];
                matrix[i][j] = matrix[j][i];
                matrix[j][i] = temp;
            }
        //2、镜像矩阵
        for(int i=0; i<matrix.length; i++)
            for(int j=0; j<matrix.length/2;j++) {
                int temp = matrix[i][j];
                matrix[i][j] = matrix[i][matrix.length-1-j];
                matrix[i][matrix.length-1-j] = temp;
            }
    }
}