所谓整数接力是指将n 个正整数前后拼接成一个数。不同的接力方式将得到不同的结

果。例如n = 3 时，3 个正整数1，2，3 的接力结果有：123，132，213，231，312，321。-The so-called integer n refers to relay a positive integer into a number of before and after splicing. Relay different ways will be different results. For example, n = 3 when 1,2,3 integer 3 is the result of the relay are as follows: 123,132,213,231,312,321.