（车厢调度代码）问题描述：停在铁路调度站入口处的车厢序列的编码依次为1，2，3，...n。设计一个程序求出可能由此输出的长度为n的车厢序列。ng code-(Car dispatch code) Problem Descr iption: Stop at the entrance to the railway station car dispatch coding sequence followed by 1,2,3, ... n. Design a program may find the length of the resulting output sequence of n compartments. ng code