系统应具备的功能：

（1）求出由一个编号依次为1，2，……，n的车厢序列可能产生的所有出栈系列；

（2）求出有多少种出栈的可能性；

（3）对于每个输出序列演示出所有操作序列的变化过程。

-System should have the function: (1) obtained by a number followed by 1,2, ... ..., n the car all the possible sequences of stack series　(2) Find out how many species of the possibility of the stack　( 3) For each output sequence shows the sequence of the change process all operations.