public static void Main()
    {
        CDShelf example = new CDShelf();

        example.cds = new List <CD>();
        example.populate();
        printResult(example);
    }
    public static void printResult(CDShelf cdShelf)
    {
        List <Object> result = cdShelf.rearrangeByLongestTitle();

        foreach (var item in result)
        {
            Console.WriteLine(item);
        }
    }