题目：有n个人围成一圈，顺序排号。从第一个人开始报数（从1到3报数），凡报到3的人退出 　　　 圈子，问最后留下的是原来第几号的那位。 1. 程序分析： 2.程序源代码：-Topic: a n personal round into 1 turn, PaiHao order. From the first man began to count off (from 1 to 3 number off), all three of whom left the report Circl