using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var kevinsLibrary = new List<Movie>();

        var ashleyLibrary = new List<Movie>();

        kevinsLibrary.Add(new Movie("A Few Good Men"));

        kevinsLibrary.Add(new Movie("Down and Out in Beverly Hills"));

        kevinsLibrary.Add(new Movie("What About Bob?"));

        kevinsLibrary.Add(new Movie("Apollo 13"));

        kevinsLibrary.Add(new Movie("Oppenheimer"));

​

        ashleyLibrary.Add(new Movie("A Few Good Men"));

        ashleyLibrary.Add(new Movie("The Godfather"));

        ashleyLibrary.Add(new Movie("What About Bob?"));

        ashleyLibrary.Add(new Movie("Oppenheimer"));

        ashleyLibrary.Add(new Movie("Slumdog Millionaire"));

​

        var commonLibrary = kevinsLibrary.Intersect(ashleyLibrary);

​

        Console.WriteLine("In Both Libraries");

        foreach (var movie in commonLibrary)

        {

            Console.WriteLine(movie.Title); // Should see A Few Good Men, What About Bob?, Planes, Trains, Oppenheimer

        }

        Console.WriteLine("Done");

​

    }

}

​

public class Movie

{

    public Movie(string title)

    {

        Title = title;

    }

    public string Title { get; set; }

}