using System;

public class Program

{

    public static void Main()

    {

        int[] input24 = { 3, 14, 5, 7, 19, 9, 6, 4, 17 };

        int[] result5 = Reverse2(input24);

        foreach(int j in result5)

        {

            Console.WriteLine(j);

        }

        Console.ReadLine();

    }

    public static int [] Reverse2(int[] input)

        {

            int start = 0;

            int end = input.Length - 1;

            for(int i = start, j = end; i < j; i++, j--)

            {   

                if (input[i] < 10 && input[j] < 10)

                {

                    var temp = input[i];

                    input[i] = input[j];

                    input[j] = temp;

                }

​

                else if(input[i] <= 10 && input[j] >= 10)

                {

                    i--;

                }

​

                else if(input[i] >= 10 && input[j] <= 10)

                {

                    j++;

                }

​

                else

                {

                    i++;

                    j--;

​

                }

            }

​

            return input;

        }

}