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import java.util.ArrayList; import java.util.List; public class Test { public static void main(String[] args) { //买牌 CardDemo cardDemo=new CardDemo(); List<Card> cardList=cardDemo.buycard(); //洗牌 cardDemo.wash(cardList); System.out.println(cardList); //玩牌3个人每人发5张 List<List<Card>> r...