生成扑克牌

  class Card
    {
        public enum CardSuit
        {
            Spade = 0,    //黑桃
            Heart = 1,    //红心
            Diamond = 2,  //方块
            Club = 3,     //草花
            Joker = 52,   //小王
            BigJoker = 53,//大王
        }
        private int id;
        public int Rank { get { return id / 4; } }  //大小
        public CardSuit Suit                        //花色
        {
            get
            {
                if (id == 53) return CardSuit.BigJoker;
                if (id == 52) return CardSuit.Joker;
                return (CardSuit)(id & 3);
            }
        }
        public override string ToString()
        {
            return Suit.ToString() + (Suit < CardSuit.Joker ? " " + Rank : "");
        }
        public static IEnumerable<Card> GetCards54() //随机发54张牌
        {
            return GetCards(54);
        }
        public static IEnumerable<Card> GetCards52() //随机发52张牌
        {
            return GetCards(52);
        }
        private static IEnumerable<Card> GetCards(int count)
        {
            int[] ids = new int[count];
            for (int i = 0; i < ids.Length; i++) ids[i] = i;
            for (int i = count; i > 0; i--)
            {
                int index = random.Next(i);
                Card card = new Card() { id = ids[index] };
                ids[index] = ids[i - 1];
                yield return card;
            }
        }
        [ThreadStatic]
        private static Random random = new Random();

    }

 

//调用

            foreach (Card c in Card.GetCards54())
            {
                Console.WriteLine(c);
               
            }

 

 

 

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