?Identify a grouping element that marks a thematic break such as a scene change or transition to a new topic.

In postorder traversal, what is the order of visiting a node and its subtrees?

What will be an ideal response?

Which of the following is a base case for a recursive binary search algorithm? (first is the index of the first item in the array, last is the index of the last item in the array, and mid is the midpoint of the array).

a. last > first b. first > last c. 0 <= first d. last <= SIZE-1