public static void Sort(IComparable[] list)
        {
            int h = 1;
            int length = list.GetLength(0);
            while (h < length / 3)
            {
                h = h / 3 + 1;
            }
            while (h >= 1)
            {
                for (int i = h; i < length; i++)
                {
                    for (int j = i; j >= h && (list[j].CompareTo(list[j - h]) < 0); j -= h)
                    {
                        Swap(list, j, j - h);
                    }
                }
                h = h / 3;
            }

        }