/// 
        /// Get the no repeat random array        /// 
        /// The min value of this random array        /// The max value of this random array        /// The result ranodm array's length        /// 
     
      The result random array
             static int[] GetNoRepeatRandomArray(int minNumber, int maxNumber, int len)        {            int[] result = new int[len];            Random ran = new Random();            int[] index = new int[maxNumber];            for (int i = 0; i < index.Length; i++)            {                index[i] = i;            }            int id;            for (int i = 0; i < len; i++)            {                id = ran.Next(minNumber, maxNumber);                result[i] = index[id];                index[id] = index[maxNumber - 1];                maxNumber--;            }            return result;        }