有54张牌，存到一个cards数组中去，为了将这些牌设置其值为0~53,要求：用随机算法，将这些牌在数组中的顺序打乱          int[] cards = new int[54];             for (int i = 0; i < cards.Length; i++)             {                 cards[i] = i;             }             Random rnd = new Random();             for (int i = 53; i >= 0; i--)             {                 int j = rnd.Next(i);                 int temp;                 temp = cards[j];                 cards[j] = cards[i];                 cards[i] = temp;             }             //建立三个17张牌的数组             int[] play1 = new int[17];             int[] play2 = new int[17];             int[] play3 = new int[17];             for(int i=0;i<54;i++) 牌的顺序已打乱了，接下来怎么写呀？头好晕