02. Common Elements Array

02.	Common Elements
Write a program, which prints common elements in two arrays. You have to compare the elements of the second array to the elements of the first.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _02CommonElements
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] firstArray = Console.ReadLine().Split();
            string[] secondArray = Console.ReadLine().Split();

            string result = "";
            foreach (var firstWord in  secondArray)
            {
                foreach (var nextWord in firstArray)
                {
                    if (firstWord == nextWord)
                    {
                        result += firstWord + " ";
                    }
                }
            }
            Console.WriteLine(result);
        }
    }
}