using System;
using System.Collections.Generic;
using System.Linq;

class Element
{
    public Element(int el)
    {
        El = el;
        Console.Write("Array element {0} accessed: ", el);
    }

    public override string ToString()
    {
       return (""+El);
    }

    private int El;

}

class LINQtoArray
{
    static void Main(string[] args)
    {
        int[] array = { 2, 6, 4, 12, 7, 8, 9, 13, 2 };

        Array.Sort(array);

        IEnumerable<Element> filteredArray =
            from element in array
            where element < 7
            select new Element(element);

        Console.WriteLine("Query complete");

        PrintArray(filteredArray, "All values less than 7:");

 /*       var orderedFilteredArray =
            from element in filteredArray
            orderby element descending
            select element;

        PrintArray(orderedFilteredArray, "All values less than 7 and sorted:");  */
    }

    public static void PrintArray<T>(IEnumerable<T> arr,string message)
    {
        Console.WriteLine("{0}",message);

        foreach (T element in arr)
            Console.WriteLine(" {0}", element);

        Console.WriteLine();
    }
}