旋转正方形矩阵

给定一个整型正方形矩阵matrix，请把该矩阵调整成 顺时针旋转90度的样子。
【要求】 额外空间复杂度为O(1)。

Code

//coding=utf8
/***************************************************** ****************************************************/
public class main{
    public static void PrintMatrix(int [][] matrix) {
        for (int i = 0; i < matrix.length; i++) {
            for (int j = 0; j < matrix[0].length; j++) {
                System.out.print(matrix[i][j]+" ");
            }
            System.out.println();
        }
    }

    public static void Rotation(int [][] matrix, int leftRow, int leftColumn, int rightRow, int rightColumn) {
        for (int i = 0; i < rightColumn - leftColumn; i++){
            int temp = matrix[leftRow][leftColumn + i];
            matrix[leftRow][leftColumn + i] = matrix[rightRow - i][leftColumn];
            matrix[rightRow - i][leftColumn] = matrix[rightRow][rightColumn - i];
            matrix[rightRow][rightColumn - i] = matrix[leftRow + i][rightColumn];
            matrix[leftRow + i][rightColumn] = temp;
        }
    }

    public static void RotationMatrix(int [][] matrix) {
        int leftRow = 0, leftColumn = 0;
        int rightRow = matrix.length - 1, rightColumn = matrix[0].length - 1;
        while (leftRow < rightRow)
            Rotation(matrix, leftRow++, leftColumn++, rightRow--, rightColumn--);
        PrintMatrix(matrix);
    }

    public static void main(String[] args) {
        int [][] matrix = {
            {1,2,3,4},
            {5,6,7,8},
            {9,10,11,12},
            {13,14,15,16}
        };

        RotationMatrix(matrix);
    }
}