using static System.Console;

using System.Text;

public class Indexer

{

    public static void Main()

    {

​

    WriteLine(nameof (StringBuilder) + "." + nameof (StringBuilder.Length));

    //Indexer idx = new("Hello World");

        WriteLine(new Indexer(new string[]{"Hello","World"})[1]);

    }

    string[] words;

    public string this[int index] => words[index];

​

    public Indexer(string str)

    {

        words = str.Split();

    }

    public Indexer(string[] str)

    {

        words = str;

    }

    ~Indexer()

    {

        WriteLine("Finalize");

    }

}