using System;

using System.Linq;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        string input = "hello world";

        byte[] inputBytes = ASCIIEncoding.ASCII.GetBytes(input);

        // Decimal display

        Console.WriteLine(String.Join(" ", inputBytes));

        // Hex display

        Console.WriteLine(String.Join(" ", inputBytes.Select(ib => ib.ToString("X2"))));

        // Binary display

        string[] binary = inputBytes.Select(ib => Convert.ToString(ib, 2)).ToArray();

        Console.WriteLine(String.Join(" ", binary));

        // Converting bytes back to string

        Console.WriteLine(ASCIIEncoding.ASCII.GetString(inputBytes, 0, inputBytes.Length));

        // Binary to ASCII

        Console.WriteLine(String.Join("", binary.Select(b => Convert.ToChar(Convert.ToByte(b, 2)))));

    }

}