using System;

using System.Collections.Generic;

using System.Net;

using System.Net.NetworkInformation;

using System.Threading.Tasks;

using System.Threading.Tasks.Dataflow;

using System.Text.RegularExpressions;

using System.Linq;

​

public class Program

{

    private static List<IPStatus> _results;

    public static async Task MyMethodAsync(IPAddress ip)

    {

        await Task.Delay(500);

        Console.WriteLine("processing");

    }

​

    public static async Task Asd()

    {

        var options = new ExecutionDataflowBlockOptions{MaxDegreeOfParallelism = 2};

        var block = new ActionBlock<IPAddress>(ip => MyMethodAsync(ip), options);

        var list = new List<IPAddress>{IPAddress.Loopback, IPAddress.Loopback, IPAddress.Loopback, IPAddress.Loopback, IPAddress.Loopback, IPAddress.Loopback, IPAddress.Loopback, IPAddress.Loopback, IPAddress.Loopback};

        foreach (var ip in list)

        {

            block.Post(ip);

        }

​

        block.Complete();

        await block.Completion;

    }

​

    public static void Main()

    {

         double[] array = new double[5] {12.1, 5.9, 2.9, 6.8, 20.5};

        Console.WriteLine("Enter input:");              // Prompt

            string input = Console.ReadLine();       

        int highestNums = Convert.ToInt32(input);

        var topThree = array.OrderByDescending(i => i)

                    .Take(highestNums);

        foreach (var x in topThree)

        {

            Console.WriteLine(x);

        }

    }

}