public void shuffle(){

do{

Random random=new Random();

p=propoker.get(random.nextInt(propoker.size()));

if(propokerp.contains(p)){

System.out.println("该张牌已经存在！！！");

}else{

propokerp.add(p);

}

}while(propokerp.size()<=propoker.size());

}