02.CommonElements

using System;
using System.Text;

namespace _02.Common_Elements
{
    class Program
    {
        static void Main(string[] args)
        {
            //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.


            string[] array1 = Console.ReadLine().Split();
            string[] array2 = Console.ReadLine().Split();
            StringBuilder result = new StringBuilder();

            for (int i = 0; i < array1.Length; i++)
            {
                for (int j = 0; j < array2.Length; j++)
                {
                    if (array1[i] == array2[j])
                    {
                        result.Append(array2[j] + " ");
                    }
                }
            }
            Console.WriteLine(result);
        }
    }
}