using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        string x = "";

        var array = x?.Split(';').ToArray();

        Console.WriteLine(array?.Count());

        var array2 = string.IsNullOrWhiteSpace(x) ? null : x.Split(';').ToArray();

        Console.WriteLine(array2?.Count());

        var array3 = x.Split(';').ToArray();

        Console.WriteLine(array3?.Count());

        var table = new string[0];

        Console.WriteLine(string.Join(";", table) == "");

    }

}