COSC 311 Homework 9/6/2018   
Create a new array of ints by repeating an input array of ints a specified
number of times.

Distributed: R 9/6/2018       Due: T 9/11/2018

Write a Java function that will return an array of ints that is formed by 
repeating an input array a specified number of times.

This is not a destructive function: allocate space for the resulting array. 
The input array is not modified.

The function header is:
    int[] repeat (int[] a, int factor);
You may use static function for repeat() if you prefer.

You will need a print array function as well. You may use the following code or your own code.
   printArray(int[] array) {
      for (int i = 0; i < array.length; i++)
         System.out.print(" " + array[i] + " ");
      System.out.println();
   }

Example:
 int[] a = {1, 2, 3, 4};
 int[] b = repeat(a, 2);

 The array b is {1, 2, 3, 4, 1, 2, 3, 4}

Repeat size <= 0 returns an empty array (size 0).

To demonstrate your program works, for each call to repeat(),
 - call repeat(a,factor)
 - print a[], factor, b[]

Execute the following cases:
(1) a = {1, 2, 3}
    factor = 1
    
    repeat(a, factor) --> {1, 2, 3}

(2) a = {1, 2, 3}
    factor = 2

    repeat(a, factor) --> {1, 2, 3, 1, 2, 3}
   
(3) a = {1, 2, 3}
    factor = -2
   
    repeat(a, factor) --> {}


Constraints:
(1) Use no Java objects or classes beyond char stream I/O; do not use ArrayList
(2) You must use int[] arrays.
(3) Allocate space for the resulting array BEFORE you start to fill it.
(4) No comments outside of the header -- this code should be self-documenting.

Points taken off for:
(1) Doesn't work
(2) Failure to meet style constraints
(3) Code does not match output
(4) Ugly or difficult to understand code

Turn in:
  -- Hard copy of code
  -- Header must include your last name, homework identifier (hw0906), URL
     of source code.
  -- Screen shot showing program execution on the three cases (values given above).