COSC 311 Homework 9/6/2017   Insert array of int into another array of int at specified location

Distributed: Wed 9/6/2017
Due: Mon 9/11/2017

Write a Java function that will return an array of int that is formed by inserting a second array at a specified position.
This is not a destructive function: allocate space for the resulting array.

The function header is:
    int[] insert (int[] a, int[] b, int offset);
You may use static function for insert() 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 = {10, 11};
 int[] c = insert(a, b, 2);

 The array c is {1, 2, 10, 11, 3, 4}

Any offset outside the range [0 .. a.length-1] returns an empty array.
If a[] is empty or b[] is empty, return an empty array.

To demonstrate your program works, for each call to insert(),
 - call insert(a, b, offset)
 - print a[], b[], offset, c[]

Execute the following cases:
(1) a = {1, 2, 3}
    b = {10, 11, 12, 13}
    offset = 0

(2) a = {1, 2, 3}
    b = {10, 11, 12, 13}
    offset = 1

(3) a = {1, 2, 3}
    b = {10, 11, 12, 13}
    offset = -2

(4) a = empty array
    b = {10, 11, 12}
    offset = 1

Constraints:
(1) Use no Java objects or classes beyond char stream I/O; do not use ArrayList
(3) You must use int[] arrays.

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