Final Exam

Code

/// Name: Kyle Ivy
/// Period: 5
/// Program Name: Final
/// File Name: Final.java
/// Date Finished: 1/20/2016

import java.util.Random;

import java.util.Scanner;

  public class Final {
    
        public static void main( String[] args ) {
            
            Scanner keyboard = new Scanner(System.in);
            
            Random rng = new Random();

            int n = 0;
            int Heads = 0;
            int Tails = 0;
        
            System.out.println("This program will tell you the probablitiy of getting heads or tails from a coin flip." );
            System.out.println();
            System.out.print("How many times would you like to flip the coin? ");
            int Flips = keyboard.nextInt();
            
            do
            {
                    int Flip = rng.nextInt(2);
                        
                    if ( Flip == 1 )
                        Heads++;
                    else 
                        Tails++;
                        
            n++;
            }
            
            while (n != Flips);
            System.out.println();
            System.out.println("You got " + Heads + " heads and " + Tails + " tails.");
            System.out.println();
            
            double probOfHeads = (double)Heads / Flips;
            double probOfTails = (double)Tails / Flips;
            
            System.out.println("The probablitity that you will get heads is " + probOfHeads + " out of 1.0.");
            System.out.println("The probablitity that you will get tails is " + probOfTails + " out of 1.0.");
            
            // I used a do while loop because I wanted the loop to be executed at least once. I used the three basic variables number of flips, heads, and tails so that I could find probability. You get a percentage of heads/tails closest to 50% the more times you flip, so I would choose a large number such as 2,000 to get consistently close to 50%.
            
        }
  }

    

Final.PNG