using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        IList<string> strList1 = new List<string>(){"One", "Two", "Three", "Four", "Five" };

        IList<string> strList2 = new List<string>(){"Four", "Five", "Six", "Seven", "Eight" ,"Three"};

        var TakeREsult = strList1.Take(2);

        var TakeWhileResult = strList1.TakeWhile((s,i)=>s.Length>=i);

        foreach(var item in TakeREsult)

            Console.WriteLine(item);

        foreach(var item in TakeWhileResult)

            Console.WriteLine(item);

        var SkipREsult = strList1.Skip(2);

        foreach(var item in SkipREsult)

            Console.WriteLine(item);

        var SkipWhileResult = strList2.SkipWhile((s,i)=>s.Length>i);

        foreach(var item in SkipWhileResult)

            Console.WriteLine(item);

        List<int> Numbers1 = new List<int>(){1,2,3,1,2,3,1,5};

        List<int> Numbers2 = new List<int>(){1,2,4,1,2,3,1};

        var resultNumbers1 = Numbers1.Distinct();

        foreach(var item in resultNumbers1)

            Console.WriteLine(item);

        var exceptresult = resultNumbers1.Except(Numbers2);

        foreach(var item in exceptresult)

            Console.WriteLine(item);

        var intersectResult = Numbers1.Intersect(Numbers2);

        var unionResult = Numbers1.Union(Numbers2);

            foreach(var item in unionResult)

            Console.WriteLine(item);

        foreach(var item in intersectResult)

            Console.WriteLine(item);

        var result = strList2.Except(strList1);

        foreach(string str in result)

                Console.WriteLine(str);

    }

}