MonteCarloTasks/MonteCarlo/Program.cs

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

namespace MonteCarlo
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Decision decision = new Decision();
            decision.FindingPi();
            decision.FindingAreaMonteCarloPrimer();
            decision.FindingAreaMonteCarlo1();
            decision.FindingAreaMonteCarlo2();
            decision.FindingAreaMonteCarlo3();
            decision.FindingAreaMonteCarlo4();
            decision.FindingAreaMonteCarlo5();
            decision.FindingAreaMonteCarlo6();
            Console.ReadKey();
        }
    }
    public class Decision
    {
        public void FindingPi()
        {
            int n = 100000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 2;
            double weight = 2;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble();
                y = random.NextDouble();
                if (Math.Pow(x - 1,2) + Math.Pow(y - 1,2) <= 1)
                {
                    k += 1;
                }
            }
            double Pi = s * k / n;
            Console.WriteLine("Результат расчёта Pi:\n" + Pi);
        }

        public void FindingAreaMonteCarloPrimer()
        {
            int n = 1000000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 5;
            double weight = 8.5;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble() * weight;
                y = random.NextDouble() * height;

                if (y < (x*(10 -  x))/5 && y > x/3)
                {
                    k += 1;
                }
            }
            double res = s * k / n;
            Console.WriteLine("Результат расчёта примера:\n" + res);
        }

        public void FindingAreaMonteCarlo1()
        {
            int n = 1000000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 1;
            double weight = 20;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble() * weight - 5;
                y = random.NextDouble() * height;

                if (y < Math.Sin(x) && y > 0)
                {
                    k += 1;
                }
            }
            double res = s * k / n;
            Console.WriteLine("Результат расчёта задачи 1:\n" + res);
        }

        public void FindingAreaMonteCarlo2()
        {
            int n = 1000000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 8;
            double weight = 7;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble() * weight;
                y = random.NextDouble() * height;

                if (y < (x*(8 - x))/2 && y > x/2)
                {
                    k += 1;
                }
            }
            double res = s * k / n;
            Console.WriteLine("Результат расчёта задачи 2:\n" + res);
        }
        public void FindingAreaMonteCarlo3()
        {
            int n = 1000000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 6;
            double weight = 12;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble() * weight;
                y = random.NextDouble() * height;

                if (y <= 6 && y > Math.Pow(x - 6, 2)/6)
                {
                    k += 1;
                }
            }
            double res = s * k / n;
            Console.WriteLine("Результат расчёта задачи 3:\n" + res);
        }
        public void FindingAreaMonteCarlo4()
        {
            int n = 1000000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 4;
            double weight = 10;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble() * weight;
                y = random.NextDouble() * height;

                if (y > x/5 && y < (x*(12 - x))/9)
                {
                    k += 1;
                }
            }
            double res = s * k / n;
            Console.WriteLine("Результат расчёта задачи 4:\n" + res);
        }

        public void FindingAreaMonteCarlo5()
        {
            int n = 1000000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 4;
            double weight = 8;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble() * weight;
                y = random.NextDouble() * height;

                if (y > (8-x)/8 && y < (x*(8 - x))/4)
                {
                    k += 1;
                }
            }
            double res = s * k / n;
            Console.WriteLine("Результат расчёта задачи 5:\n" + res);
        }
        public void FindingAreaMonteCarlo6()
        {
            int n = 1000000;
            int k = 0;
            double x = 0;
            double y = 0;
            double height = 1;
            double weight = 2.8;
            double s = height * weight;

            Random random = new Random();

            for (int i = 1; i <= n; i++)
            {
                x = random.NextDouble() * weight;
                y = random.NextDouble() * height;

                if (y < Math.Sin(x) && y > Math.Pow(x - 2, 2)/2)
                {
                    k += 1;
                }
            }
            double res = s * k / n;
            Console.WriteLine("Результат расчёта задачи 6:\n" + res);
        }
    }
}