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

class Massiivitehted4{
    public static void Main(string[] arg) {
        int[] m = { 2, 6, 4, 5, 3, 2 };
        Console.WriteLine("Neljast suuremaid: " + m.Count(a => a > 4));
        Console.WriteLine("Neljast suuremad: "+
             string.Join(" ", m.Where(a => a > 4)));
        Console.WriteLine("Esimene neist: " + m.First(a => a > 4));

        Console.WriteLine("Kahega korrutatult: " +
             string.Join(" ", m.Select(a => a * 2)));
	    IEnumerable<string> baidid=m.Select(a=>(a*2)+"x");
	    IEnumerable<int[]> massiivid=m.Select(a=>new int[a]);
	    IEnumerable<int> massiivid2=m.SelectMany(a=>new int[a]);
        Console.WriteLine("Nullihunnik: " +
             string.Join(" ", massiivid2));
        Console.WriteLine("Nullihunnik: " +
             string.Join(" ", massiivid2.Concat(m)));
        Console.WriteLine("Kahega korrutatult: " +
             string.Join(" ", m.Select(a => (a * 2)+"b")));
        Console.WriteLine("Kuni väärtuseni 5: " +
             string.Join(" ", m.TakeWhile(a => a != 5)));
        Console.WriteLine("Alates väärtusest 5: " +
             string.Join(" ", m.SkipWhile(a => a != 5)));
        Console.WriteLine("Kahanevalt sorditult "+ 
               string.Join(" ",m.OrderBy(a => -a)));
    }   
}