using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        double[] arr = { 2.1, 70.1, 15.1, 92.1, 105.1, 65.1, 40.1, 9.1, 22.1 };

        int n = 3;

        double[] result = arr.OrderByDescending(x=>x).ToArray();

        //Result will contais {105, 92, 70, 65, 40, 22, 15, 9, 2}

        //More readable to newbie 

        Console.WriteLine("Top {0} elements from Array", n);

        for(int i = 0; i < n; i++)

        {

          Console.Write(result[i]+" ");

        }

    }

}