TestRandom

 

本人数学不好

想用计算机测试下概率

就是设置一个目标数字（如100）

用计算机的随机数以目标数字（如100）产生随机数（0-100之间）

当产生的随机数大于或等于目标数（如>=100）时候设置变量TureCount++,

当产生的随机数小于于目标数（如<100）时候          设置变量FalseCount++,

然后统计（TureCount-FalseCount）的值大于或等于某个值（如Abs（TureCount-FalseCount）>=10）的情况(出现的次数)！

 

发现有点不可思议！

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

        }

        int TureCount;
        int FalseCount;
        int i, j, result;

        private void button1_Click(object sender, EventArgs e)
        {

            if (timer1.Enabled)
            {
                button1.Text = "Start";

                timer1.Stop();

            }
            else {

                button1.Text = "Stop";
               
                timer1.Start();
           
           
            }

 

 

        }

 

        void test(int input) {
            i++;

            Random rnd = new Random();

            int r = rnd.Next(input);

            if (r >= (input / 2))
            {

                TureCount++;
                label1.Text = "TrueCount:" + TureCount.ToString();

 

            }

            else {

                FalseCount++;
                label2.Text = "FalseCount:" + FalseCount.ToString();             
           
            }

            label3.Text = "Time--- " + i.ToString() + "---CurrentRandom: " + r.ToString();

            if (Math.Abs((TureCount - FalseCount)) > numericUpDown1.Value)
            {

                result++;
         

                Lbresult.Text = result.ToString() ;

               // timer1.Stop();

                //return;

            }

       
        }

        private void timer1_Tick(object sender, EventArgs e)
        {

         test(Convert.ToInt32(numericUpDown2.Value));

 

        }

        private void button2_Click(object sender, EventArgs e)

        {
            reset();

        }

        void reset(){

            timer1.Stop();
            button1.Text = "Start";
            i = 0;
            TureCount = 0;
            FalseCount = 0;
            result = 0;
            label1.Text = "TrueCount:" + TureCount.ToString();
            label2.Text = "FalseCount:" + TureCount.ToString();
            label3.Text = "Time--- " + i.ToString() + "---CurrentRandom: None";
            Lbresult.Text = "0";

       
        }

        private void numericUpDown2_ValueChanged(object sender, EventArgs e)
        {

            if( numericUpDown2.Value>=Int32.MaxValue){
           
           
           
            numericUpDown2.Value=Int32.MaxValue;

              }

        }

        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {
            if (numericUpDown1.Value >= Int32.MaxValue)
            {

                numericUpDown1.Value = Int32.MaxValue;

            }

        }

 

    }
}