该程序用来实现用来哟瑟夫环问题。只用一个功能函数即可。函数中有两个参数，分别是第一个喊数人的编号，另一个是喊数上限。-this program mainly used for playing Joesph ring.there is only one function,and have two formal parameter.the first is number of people who get the shu first,the second is the max of shu.