using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication33
{
    class Program
    {

        delegate int Funkce(int a, int b);

        static int Soucet( int a, int b )
        {
            return a + b;
        }

        static int Soucin( int a, int b )
        {
            return a * b;
        }

        static void Vytiskni( int a, int b, Funkce f)
        {
            Console.WriteLine("a={0} b={1} -> {2}",a,b,f(a,b));
        }


        static void TiskniA()
        {
            Console.WriteLine("A");
        }

        static void TiskniB()
        {
            Console.WriteLine("B");
        }

        delegate void NecoTiskni();

        static void VytvorNaplnASetridPole()
        {
            int N = 20000;
            int MAX = 1000 * 1000;
            int[] pole = new int[N];
            Random rnd = new Random();
            for (int i = 0; i < N; i++)
            {
                pole[i] = rnd.Next(MAX);
            }

            for (int i = 0; i < N-2; i++)
            {
                for (int j = 0; j < N-2; j++)
                {
                    if (pole[j+1]<pole[j])
                    {
                        int pom = pole[j]; 
                        pole[j] = pole[j+1]; 
                        pole[j+1] = pom;
                    }
                }
            }
            Console.WriteLine("{0}ms",
                (DateTime.Now - sstart).TotalMilliseconds);
        }

        static object zamek = new int();

        static bool JeNaRadeTecka = true;
        static void TiskniZavinac()
        {
            for (int j = 0; j < 10; j++)
            {
                lock (zamek)
                {
                    for (int i = 0; i < 50; i++)
                    {
                        Console.Write("@");
                    }
                    Console.WriteLine();
                }
            }
        }

        static void TiskniTecku()
        {
            for (int j = 0; j < 10; j++)
            {
                lock (zamek)
                {
                    for (int i = 0; i < 50; i++)
                    {
                        Console.Write(".");
                    }
                    Console.WriteLine();
                }
            }
        }


        static DateTime sstart = DateTime.Now;
        static void Main(string[] args)
        {
            
            (new System.Threading.Thread(TiskniZavinac)).Start();
            (new System.Threading.Thread(TiskniTecku)).Start();
            Console.ReadLine();

            Console.WriteLine(Environment.ProcessorCount);

            sstart = DateTime.Now;

            System.Threading.Thread th
                = new System.Threading.Thread(VytvorNaplnASetridPole);
            th.Start();

            (new System.Threading.Thread(VytvorNaplnASetridPole)).Start();
            (new System.Threading.Thread(VytvorNaplnASetridPole)).Start();
            (new System.Threading.Thread(VytvorNaplnASetridPole)).Start();

            Console.ReadLine();

            return;


            Vytiskni(10, 20, Soucin);
            Console.ReadLine();

            Vytiskni(10, 20, 
                delegate(int a, int b) 
                {
                    return a + 2 * b;
                }
                );
            Console.ReadLine();



            NecoTiskni P = null;

            P = TiskniA;
            P += TiskniB;
            P += TiskniA;
            P += TiskniB;
            P += TiskniA;
            P += TiskniB;
            P();
            Console.WriteLine("----------------");
            P -= TiskniA;
            P();
            Console.WriteLine("----------------");
            P -= TiskniA;
            P -= TiskniA;
            P();
            Console.WriteLine("----------------");
            P -= TiskniA;
            P -= TiskniA;
            P();

            Console.ReadLine();
            return;




            Funkce f = Soucet;
            Vytiskni(5, 7, f);
            f = Soucin;
            Vytiskni(5, 7, f);




            Vytiskni(5, 7, Soucet);
            Vytiskni(5, 7, Soucin);
            Console.ReadLine();











            DateTime start = DateTime.Now;

            string s = "";
            StringBuilder sb = new StringBuilder("");
            for (int i = 0; i < 1000*1000; i++)
            {
                if (i % 1000 == 0)
                    Console.WriteLine("{0} {1}",
                    i, (DateTime.Now - start).TotalMilliseconds);
                //s = s + 'a';
                sb.Append('a');
            }

            s = sb.ToString();
            Console.WriteLine(s);

            Console.ReadLine();


            TimeSpan doba = DateTime.Now - start;
            Console.WriteLine("{0}ms",doba.TotalMilliseconds);


        }
    }
}