using System;

​

public class Program

{

    public static void Main()

    {

        char[] alphabets = new char[]{'A', 'B', 'C', 'D', 'E'};

        char lastChar = alphabets[^1]; // 'E'

        char lastSecond = alphabets[^2]; // 'D'

        char[] slice1 = alphabets[..2]; // 'A', 'B'

        char[] slice2 = alphabets[2..]; // 'C', 'D', 'E'

        char[] slice3 = alphabets[2..3]; // 'C'

        char[] slice4 = alphabets[^2..]; // 'D', 'E'

        char[] slice5 = alphabets[0..^0]; // 整個範圍

        Console.WriteLine(slice5);

    }

}