n个人围成一圈数到m和m的倍数时出圈，问剩下的人是谁？在原来的位置是多少？

package com.xiaojiang;import java.util.LinkedList;public class mianshi {public static void main(String[] args) {removeNM(50,3);}private static void removeNM(int n, int m) {LinkedList ll = new LinkedList();for(int i=1;i<=n;i++){ll.add(new Integer(i));}int removed=-1;while(ll.size()>1){removed = (removed + m) % ll.size();System.out.println(ll.remove(removed--));}System.out.println(ll.get(0));}}