Monty Hall Paradox

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        //Demonstrates the Monty Hall Paradox and theory of probability. (Just some random thing I wanted to do for fun...I assume everything is correct since I got a 2 to 1 ratio?)

import java.util.ArrayList;
import java.util.Collections;
import java.util.Random;

/** 
 * @author JT Newsome
 */
public class MontyHallTester {
	public static int forMonty = 0;
	public static int againstMonty = 0;
	public static int min = 0;
	public static int max = 2;
	public static int timesToLoop = 1000000;

	public static void main(String[] args) {
		for(int i = 0; i < timesToLoop; i++){
			montyTest();
		}
		System.out.println("forMonty: "+forMonty);
		System.out.println("againstMonty: "+againstMonty);
		System.out.println("Ratio: "+ (forMonty/againstMonty));
	}

	public static void montyTest(){
		ArrayList<Integer> boxes = new ArrayList<Integer>();
		boxes.add(0);
		boxes.add(1);
		boxes.add(2);
		Collections.shuffle(boxes);
		Random rand = new Random();
		int randomNum1 = rand.nextInt(max - min + 1) + min;
		if (boxes.get(randomNum1) == 2){
			againstMonty++;
		}
		else forMonty++;
	}

}

Tags:
• Fun
• math
• Monty Hall
• paradoxes