using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var Obstkorb = new[]{"Apfel", "Orange", "Moehre", "Banane", "Birne"};

        var Obstliste = new[]{"Orange", "Moehre", "Banane", "Erdbeeren", "Ananas", "Traube", "Zitrone", "Pfirsich"};

        var Rest = Obstkorb.Except(Obstliste).ToArray();

        Rest.Dump();

    }

}