using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

            int[] input2 = { 2, 4, 6, 1, 5, 8, 10, 7, 8, 6 };

            int[] result3 = Array2(input2);

            foreach(int b in result3)

            {

                Console.WriteLine(b);

            }

            Console.ReadLine();

​

    }

    public static int[] Array2(int[] input)

        {

            int len = input.Length;

            for (int i = 0; i < len; i++)

            {

                if (input[i] >= 10)

                {

                    break;

                }

​

                if (input[i] < 10)

                {

                    input[i] = input[i] * 2;

                }    

            }

​

            return input;

        }

}