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Thread: Monte Carlo Method

  1. #1
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    Default Monte Carlo Method

    Hello, I have this assignment that I don't understand at all. here are the instructions:

    Write a program that uses the Monte Carlo sampling method to estimate
    the average number of bottles of e-Boost someone would have to drink to
    win a prize. There is a 1 in 5 chance that a bottle cap will have a prize.

    and here is what i have so far:

    //import the classes
    import java.io.IOException;
    import java.util.Scanner;
    import java.io.File;
    import java.util.Random;
    public class montecarlomethod
    {
        public static void main(String[] args) throws IOException
        {
            Scanner in = new Scanner(System.in);
            Random rand = new Random();
     
            int count = 0;
     
            System.out.print("Number of Trials: ");
            int numTrials = in.nextInt();
     
           //randomly generate the value of the "guessing" cap
            int randBottleCap = rand.nextInt(5)+1;
     
            //Loop to increment through the number of trials    
            for(int i = 1; i <= numTrials; i++)
            {
                int winningCap = rand.nextInt(5)+1;
     
                //check to see if the "guessing" cap is equal to the winning cap
                if( randBottleCap != winningCap)
                {
                    count++;
                    randBottleCap = rand.nextInt(5)+1;
                }
                else
                {
                    System.out.println(count);
                }
     
            }
        }
    }
    Last edited by helloworld922; January 20th, 2012 at 09:58 PM.


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: Monte Carlo Method

    What specifically don't you understand?

    For a start, what is your code doing? Is there any compiler or runtime errors? If so, please post the message. What outputs are you getting, and what inputs are you using?

    suggested reading:

    http://www.javaprogrammingforums.com...e-posting.html
    http://www.javaprogrammingforums.com...-get-help.html

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