package xq;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Random;

public class choujiang {

ArrayList cards;

public ArrayList
    
      deal(){     if(cards==null){        cards = new ArrayList
     
      ();         for(int i =1;i<100;i++){            cards.add(i);        }            }    Collections.shuffle(cards);    return cards;}public void play(){   Random r = new Random();    int a = r.nextInt(100);   System.out.println("一等奖："+ cards.get(a)+"号");   cards.remove(a);   for(int i=1;i<=3;i++){       a = r.nextInt(100);      System.out.println("二等奖:"+cards.get(a)+"号");      cards.remove(a);   }}public static void main(String[] args) {choujiang a=new choujiang();a.deal();a.play();}