对int数组进行从大到小的排序,并去除重复项

        static void Main(string[] args)
        {
            int[] xx = { 1, 4, 4, 4, 6, 6, 8, 76, 7, 4 };
            List<int> l = xx.ToList<int>();
            l.Sort();

            var query = (from q in l
                         select q).Distinct();

            for (int i = query.Count() - 1; i > 0; i--)
            {
                Console.Write(query.ElementAt(i) + " , ");
            }

            Console.Read();
        }