public static IntArrayBag union(IntArrayBag b1, IntArrayBag b2)
	{
			IntArrayBag answer = new IntArrayBag(b1.getCapacity() + b2.getCapacity());
			
			System.arraycopy(b1.data, 0, answer.data, 0, b1.manyItems);
			System.arraycopy(b2.data, 0, answer.data, b1.manyItems, b2.manyItems);
			answer.manyItems = b1.manyItems + b2.manyItems;
			
			return answer;
	}