using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(IsNewerThanCurrentVersion("1.0.5"));

        Console.WriteLine(IsNewerThanCurrentVersion("1.0.5-DEV"));

    }

    public static bool IsNewerThanCurrentVersion(string newestVersion)

        {

            var currentVersion = "1.0.5-DEV";

            if (currentVersion == newestVersion)

            {

                return false;

            }

​

            var currentVersionNumbers = GetNumericVersionPart(currentVersion);

            var newestVersionNumbers = GetNumericVersionPart(newestVersion);

            if (currentVersionNumbers.Length != newestVersionNumbers.Length)

            {

                throw new SystemException("Versions do not match.");

            }

​

            return currentVersionNumbers.Where((currentVersionNumber, i) => int.Parse(newestVersionNumbers[i]) > int.Parse(currentVersionNumber)).Any();

        }

    private static string[] GetNumericVersionPart(string version)

        {

            var firstHyphenPosition = version.IndexOf("-", StringComparison.OrdinalIgnoreCase);

            var numericPart = firstHyphenPosition == -1 ? version : version.Substring(0, firstHyphenPosition);

            return numericPart.Split('.');

        }

}