int[] ints = { 10, 45, 15, 39, 21, 26 };
           
            foreach (var i in ints.OrderBy(g => g))
            {
                System.Console.Write(i + " ");
            }
            Console.WriteLine();
            var str = new string('-', 10);
            Console.Write(str);
            Console.WriteLine();
            
            foreach (var i in ints.OrderByDescending(g => g))
            {
                System.Console.Write(i + " ");
            }
            Console.WriteLine();