编程题
    1. 编程序，打印图形
                图形：V           V
                       V         V
                        V       V
                         V     V
                          V   V
                            VV
    2.编程序打印数字菱形，将有键盘输入1-9之间的自然数作为菱形最外层的数（如下图，示为5）
                图形：      5
                          5 4 5
                       5  4 3 4  5
                    5  4  3 2 3  4  5
                 5  4  3  2 1 2  3  4  5
                     5 4  3 2 3  4  5
                       5  4 3 4  5
                          5 4 5
                            5
   3.编程打印M个实心菱形，菱形每条边由N个“*”组成。（M,N的值要保证再屏幕上完整显示）
                      望大家多多留言，我只是小学生。(*^__^*) 嘻嘻……
                            


                     （做题时请附上意思，谢谢。是编程意思，谢谢。）