using System.Text;

namespace ConsoleApp15
{
    internal class Program
    {

        public delegate int Funkce(int x, int y);

        public static int Soucet(int x, int y)
        { return x + y; }

        public static int Soucin(int x, int y)
        { return x * y; }


        public delegate void Tisk(string zprava);

        static void Jednou(string zprava)
        {
            Console.WriteLine($"JEDNOU: {zprava}");
        }

        static void Dvakrat(string zprava)
        {
            Console.WriteLine($"DVAKRAT: {zprava}");
            Console.WriteLine($"DVAKRAT: {zprava}");
        }



        static void VytvorNaplnASetridPole()
        {
            const int N = 30_000;
            const int MAX = 100;

            // 1. vytvor:
            int[] pole = new int[N];

            // 2. napln:
            Random rnd = new Random();
            for (int i = 0; i < N; i++)
            {
                pole[i] = rnd.Next(MAX);
            }

            // 3. setrid:
            for (int i = 0; i < N; i++)
            {
                for (int j = 0; j < N-1; j++)
                {
                    if (pole[j] > pole[j+1])
                    {
                        int pom = pole[j];
                        pole[j] = pole[j + 1];
                        pole[j + 1] = pom;
                    }
                }
            }
            Console.WriteLine($"{(DateTime.Now - start).TotalMilliseconds} ms");
        }
        static DateTime start;

        static void Main(string[] args)
        {
            string zamek = "Karlstejn";
            int[] druhyZamek = new int[1];

            (new Thread(
                delegate ()
                {
                    for (int i = 0; i < 200; i++)
                    {
                        lock (zamek)
                        {
                            for (int j = 0; j < 5; j++)
                            {
                                Console.Write('.');
                            }
                        }
                    }
                }
                )).Start();

            (new Thread(
              delegate ()
              {
                  for (int i = 0; i < 200; i++)
                  {
                      lock (zamek)
                      {
                          for (int j = 0; j < 5; j++)
                          {
                              Console.Write('@');
                          }
                      }
                  }
              }
                )).Start();


        }

        static void Main_2(string[] args)
        {
            Console.WriteLine(Environment.ProcessorCount);



            start = DateTime.Now;

            VytvorNaplnASetridPole();
            VytvorNaplnASetridPole();
            VytvorNaplnASetridPole();
            VytvorNaplnASetridPole();

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

            Console.ReadLine();

            for (int i = 0; i < 20; i++)
            {
                new Thread(VytvorNaplnASetridPole).Start();
            }



        }


        static void Main_1(string[] args)
        {
            Tisk t = Jednou;

            t("ABC");

            t += Jednou;
            t("DEF");

            t += Dvakrat;
            t("GHI");

            t -= Jednou;
            t("JKLF");

            t -= Jednou;
            t("MNO");

            t -= Jednou;
            t("PQR");

            t -= Jednou;
            t("STU");

            t = delegate (string s)
            { Console.WriteLine($"Anonym: {s}:{s}"); };

            t("VW");





            Console.ReadLine();



            Funkce f;

            f = Soucet;
            Console.WriteLine( f(10,20));

            f = Soucin;
            Console.WriteLine(f(10, 20));




            Console.ReadLine();

            DateTime start = DateTime.Now;

            //Console.ReadLine();

            int N = 1_000_000;
            string s = "";
            StringBuilder sb = new StringBuilder("");

            for (int i = 0; i < N; i++)
            {
                //s = s + 'a';
                sb.Append('a');

                if (i % 10_000 == 0)
                {
                    TimeSpan doba = DateTime.Now - start;
                    Console.WriteLine($"{i} {doba.TotalMilliseconds} ms");
                }

            }


            Console.WriteLine($"{(DateTime.Now - start).TotalMilliseconds} ms");

        }
    }
}