1. When the programmer shifts array items during an insertion, which item is moved first, the one at the insertion point or the last item, and why? 2. Explain why some items in an array might have to...

1. When the programmer shifts array items during an insertion, which item is moved first, the one at the insertion point or the last item, and why?

2. Explain why some items in an array might have to be shifted when a given item is inserted or removed.