import java.util.*;

public class Draw {

private ArrayList list;

public Draw() {

list= new ArrayList();

}

public void deal(int num) {

//向容器中添加奖券（使用循环）

		for (int j = 0; j<= num ; j++) {

			 list.add(j);

	}

	//打乱顺序

	Collections.shuffle( list);

}

public void drawLottery(int n){

  Random ra = new Random();

  for(int i=0;i<n;i++){

  int index =ra.nextInt(list.size());

  System.out.print(list.get(index)+"\t");

  list.remove(index);

  }

  System.out.println();

  }

public static void main(String[] args) {

	// TODO Auto-generated method stub

	Draw c = new Draw();

	c.deal(100);

	System.out.println("————————一等奖————————");

	c.drawLottery(2);

	System.out.println("————————二等奖————————");

	c.drawLottery(5);

	System.out.println("————————三等奖————————");

	c.drawLottery(10);

}

}