写的一个程序，内容是：一组人（n个），围成一圈，从某人开始数到第三个的人出列，再接着从下一个人开始数，最终输出最终出列的人

（约瑟夫环是一个数学的应用问题：已知n个人（以编号1，2，3...n分别表示）围坐在一张圆桌周围。从编号为k的人开始报数，数到m的那个人出列；他的下一个人又从1开始报数，数到m的那个人又出列；依此规律重复下去，直到圆桌周围的人全部出列。）

-A group of people (n points), circle, someone starts counting　the third person out of the line, followed by a personal number　the next, eventually the final output column

(Josephus is the application of a mathematical problem: Given n people (represented respectively numbered 1,2,3 ... n) sitting around a round table　No. k people began to count off, count to m. the man out of the column　his next person and　1 countin, count to m the man was out of the column . so the law is repeated until all the people around the round table column)