In this homework, you'll be writting 2 classes (or programs).

Your first program is simple: when run, it should print out the text
Hello, world!  

Your class should be called HelloWorld, so your file should be
called HelloWorld.java.

Your second class is more complex and will contain multiple
objectives. Each should be in a separate method, and all of your
methods will be static. While a real Java program wouldn't be
programmed this way, it makes it much easier for you to get a feel for
writing methods, passing parameters, etc.

Call this class PartTwo (so it needs to be in a file named PartTwo.java).

In writing this program, you shouldn't use any variables outside of
your methods. However, you are encouraged to use constants
(e.g. public static final String MYGTNUM = "gte123a";)

Also, remember that Java is case sensative, so your method signatures
and class names must match ExAcTlY those given to you in the homework.

You will need to do the following:

A) Create a function which, when called, prints your GT number to the
   screen. Your method signature should be 
   public static void gtnum()

B) Create a function which accepts a string and prints it 10
   times. You MUST use a loop. Your method signature should be
   public static void print10(String dataIn)

C) Create a function which accepts 3 integers and returns the largest
   one. Your method signature should be
   public static int max3(int n1, int n2, int n3)

D) Create a function which accepts 2 integers, prints them, swaps
   them, then prints them again. Your method signature should be 
   public static void swap(int n1, int n2)

E) Create a function which accepts 2 integers, prints them, calls the
   swap function from part D, then prints the integers again. Now,
   explain what happened and why inside a comment INSIDE of this
   method.   Your method signature should be
   public static void swapTest(int a, int b)

F) Create a function which accepts an integer and returns its
   factorial. Use recursion. Your method signature should be
   public static int factR(int n)

G) Now, do factorial using iteration. The method signature should be
   public static int factL(int n)

H) Finally, write a main method which calls all of your other methods,
   thoroughly testing them. Your method signature should be
   public static void main(String[] argv)