using System;

using System.Collections.Generic;

​

public class Program 

{

​

    public static void Main(string[] args)

    {

        var testArray = new int[] { 1, 2, 3, 4, 5, 6 };

        Console.WriteLine(String.Join(", ", FindEvenIntegers(testArray)));

    }

    private static int[] FindEvenIntegers(int[] arr)

    {

        List<int> evens = new List<int>();

        foreach (int num in arr)

        {

            if(num % 2 == 0)

            {

                evens.Add(num);

            }

        }

        return evens.ToArray();

    }

}

​

​