Final Assignemnt

Code

 /// Name: Daniel Nguyen
 /// Period: 6
 /// Program Name: probprob Program
 /// File Name: probprob.java
 /// Date Finished: 9/9/2015
import java.util.Random;
import java.util.Scanner;

public class probprob
{
	public static void main( String[] args )
	{
        Random rng = new Random();
        Scanner keyboard = new Scanner(System.in);
        int want = 1;
        int next = 0;
        int flips = 0;
        int flip = 0;
        int heads = 0;
        int tails = 0;
		while (flips != want) {
            while (next != 1) {
                System.out.println("Enter how many times you want to flip a coin: ");
                System.out.print("> ");
                want = keyboard.nextInt();
                if (want < 0 || want > 2100000000 )
                    System.out.println("Sorry, pick a number between 0 and 2,100,000,000");
                else if (want > 0 || want < 2100000000) {
                    System.out.println("Ok! " + want + " times WOW! Give me a sec.");
                    next = 1;
                }
            }
            flip = rng.nextInt(2);
            if (flip == 1)
                heads++;
            else if (flip == 0)
                tails ++;
            flips++;
        }
        double probOfHeads = (double)heads / want;
        double probOfTails = 1 - probOfHeads;
        probOfHeads = probOfHeads * 100;
        probOfTails = probOfTails * 100;
        System.out.println("You rolled " + heads + " heads, and " + tails + " tails.");
        System.out.println("The probability of rolling heads was " + probOfHeads + "% and the probability of rolling tails was " + probOfTails + "%.");
    }
}
// The best number of flips to get ~50% consistantly is 6000 flips







    


    

Picture of the output