LINQWithSimpleTypeArray

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

class LINQWithSimpleTypeArray
{
    static void Main(string[] args)
    {
        int[] values = { 2, 9, 5, 0, 3, 7, 1, 4, 8, 5 };

        Display(values, "Original array:");

        var filtered =
            from value in values
            where value > 4
            select value;

        Display(filtered, "Array values greater than 4:");

        var sorted =
            from value in values
            orderby value //descending 降序的Tag

            select value;

        Display(sorted, "Original array,sorted:");

        var sortFilteredResults =
            from value in filtered
            orderby value descending
            select value;

        Display(sortFilteredResults, "values greater than 4,descending order (separately):");

        var sortedAndFiltered =
            from value in values
            where value > 4
            orderby value descending
            select value;

        Display(sortedAndFiltered, "values greater than 4,descending order (one query):");

        Console.ReadKey(true);
    }//End Main


    private static void Display(
        IEnumerable<int> results, string header)
    {
        Console.Write("{0}", header);

        foreach (var element in results)
            Console.Write(" {0}", element);
        Console.WriteLine();
    }//End method Display

}