using System;

using System.Text.RegularExpressions;

using System.Linq;

​

​

public class Program

{

    public static void Main()

    {

        string text = "holidays/*/2024/*/foobar";

        Regex re = new Regex(@"(?:^|\*)(?=([^*]+)(\*|$))");

        MatchCollection matches = re.Matches(text);

        foreach (Match match in matches) {

            Console.WriteLine(

                String.Join("", (

                    from Group matchGroup in match.Groups

                    where matchGroup.ToString() != ""

                    select matchGroup.ToString()

                ))

            );

        }

    }

}