1 static class  ShuffleCards

 2 {

 3     private static int lastHash = 0;

 4     public static void Work(byte[] cards)

 5     {

 6         if (lastHash == 0)

 7             lastHash = System.Environment.TickCount;

 8         int len = cards.Length - 2;

 9         int mod = 0;

10         byte temp = 0;

11         for (int i = cards.Length - 1; i >= 0 && len>0; i--)

12         {

13             lastHash = (lastHash << 5) - lastHash + i;

14             mod = lastHash < 0 ? lastHash % len * (-1) : lastHash % len;

15             temp = cards[mod];

16             cards[mod] = cards[i];

17             cards[i] = temp;

18             len--;

19         }

20     }

21 }

 1 //16张牌0~F

 2 byte[] cards = new byte[16];

 3 //洗上99次

 4 for (int j = 0; j < 100; j++)

 5 {

 6     //每次都初始化顺序为 0~F

 7     for (int i = 0; i < cards.Length; i++)

 8         cards[i] = (byte)i;

 9     //洗牌调用

10     ShuffleCards.Work(cards);

11     StringBuilder ret = new StringBuilder();

12     //输出

13     for (int i = 0; i < cards.Length; i++)

14         ret.Append(cards[i].ToString("X") + " ");

15     Console.WriteLine(j.ToString()+" > "+ ret.ToString());

16 }

17 Console.ReadLine();