Semester 1 Final

Code

    /// Name: Ryan McAteer
    /// Period: 5
    /// Program Name: Semester 1 Final
    /// File Name: Final.java
    /// Date Finished: 1/20/16
    
import java.util.Scanner;
import java.util.Random;

public class Final
{
    public static void main ( String[] args )
	{
        Scanner keyboard = new Scanner(System.in); //This is quite a challenging subject for me so I played it safe//
		Random rng = new Random();
        int numberOfTimes, steps, heads, tails; //Logical variables for the assignment//
        steps = 0;
        heads = 0;
        tails = 0;
        System.out.println("Hello! Welcome to my final! How many times should I flip the coin?");
        System.out.print("> ");
        numberOfTimes = keyboard.nextInt();
        do //Assignment 70 was a good base for this assignment as it involves coins, do while loops, and the rng elements
		{
			int flip = rng.nextInt(2);
            if ( flip == 1 )
            {
                heads++;
                steps++; //<- for the "numberOfTimes" variable//
            }
            else
            {
                tails++;
                steps++;
            }
        } while ( steps != numberOfTimes ); // I felt a do-while loop made this assignment easier//
        System.out.println("You flipped " + heads + " heads and " + tails + " tails.");
        int numberOfHeads, numberOfTails, chances; //Probability syntax required for last bit of the assignment//
        numberOfHeads = 50;
        chances = 100;
        double probOfHeads = (double)numberOfHeads / chances;
        numberOfTails = 50;
        double probOfTails = (double)numberOfTails / chances;
        System.out.println("You had a " + probOfHeads + "% chance of rolling heads and a " + probOfTails + "% chance of rolling tails.");
        //I started by using the number 10 for numberOfTimes just to test my program. After I had it working, I changed 10 to 100 This number was the closest I could get to a 50/50 chance as after running 10 trials, heads "won" 5 and tails           "won" 5. I tried 1000 for numberOfTimes, but the variance only increased. While 100 was the number, the difference           was no more than 5 for my ten trials, but when 1000 was the number, the difference was always 20+ for the 10 trials.//
    }
}



            
    

Picture of the output