using System.Collections.Generic;

using SemanticVersioning;

public class Program

{

    public static void Main()

    {

        var versions = new string[] { "3.0.0-alpha.7", "3.0.0-alpha.8", "3.0.0-alpha.7.1" };

        var sortedVersions = SortVersionsDescending(versions);

        foreach(string version in sortedVersions){

            System.Console.WriteLine(version);

        }

    }

    public static List<string> SortVersionsDescending(string[] versions)

    {

        var sortedVersions = new List<Version>();

​

        foreach (var version in versions)

        {

            sortedVersions.Add(new Version(version));

        }

​

        sortedVersions.Sort();

        sortedVersions.Reverse();

​

        return sortedVersions.ConvertAll<string>(v => v.ToString());

    }

}