Fall Final, WE THE BEST!

Code

/// Name: Jonathan Stine
/// Period 5
/// Program Name: Coin Flip Final 1
/// File Name: Final1.java
/// Date Finished: 1/20/16


import java.util.Scanner;
import java.util.Random;

public class Final1
{

    public static void main(String[] args) 
    {
         Scanner input = new Scanner(System.in); 
        
        
        System.out.println( " How many times would you like to flip a coin? Please enter whole numbers only. " );
        int n = input.nextInt();
         while ( n < 1 || n > 2100000000 )
        {
            System.out.println("Sorry... Your number was ");
            
            if ( n < 1 )
            {
                System.out.println("too small.");
            }
            else if ( n > 2100000000 )
            {
                System.out.println("too large.");
            }
            
            System.out.println("Please select a number between 1 and 2,100,000,000.");
            n = input.nextInt();
        }
       
        int f = n;
        /// This line here is used to "save" the ammount of flips in variable "f" before "n" gets altered in the coin flipper sequence.
        int h = 0, t = 0;
        
        Random r = new Random();
        int heads, tails;
        while ( n > 0 )
        {
            int x = r.nextInt(2);
            
            if ( x == 0 )
            {
            h++;
            n--;
            } else if ( x == 1 )
            {
                t++;
                n--;
            }
            
        }
        double probHeads = 100 * (double)h / f;
        double probTails = 100 * (double)t / f;
        System.out.println(" You had " + h + " heads and " + t + " tails.");
        System.out.println( "The probability of getting heads was " + probHeads + "%" );
        System.out.println( "The probability of getting tails was " + probTails + "%" );
        
                
            }
        }
    
    ///High numbers divisible by 10 get the closest to a 50% to 50% ratio. Numbers like 1000 or 10000 work well to get as close to 50% as possible.
    
 
    

Code Output