skyline0217

//input: 開始數字、結束數字、產生數量

protected ArrayList GenerateRandom(int start, int end, int count)
        {
            if (start > end)
                throw new ArgumentException();
            if (count > end - start + 1)
                throw new ArgumentException();
            ArrayList randomValues = new ArrayList();
            Random rm = new Random ();
            int randomValue;
            for (int idx = 0; idx < count; ++idx)
            {
                do
                {
                    randomValue = rm.Next(start, end+1);
                } while (randomValues.Contains(randomValue));
                randomValues.Add(randomValue);
            }
            return randomValues;
        }