using System;

public class Program

{

    public static void Main()

    {

        int[] elements = new int[4]{1, 2, 3, 4};

        Console.WriteLine(JoinArray(elements));

    }

        static string JoinArray(int[] numbers)

        {

    string resposta = "";

    for (int i = 0; i < numbers.Length; i++)

    {

​

    resposta = resposta + numbers[i];

    }

​

    return resposta;

    }

}

​