Exam-style question
Try this first
What does an empty-queue test determine?.
- A.Whether the queue contains no items
- B.Whether the queue contains its maximum number of items
- C.Whether the rear is before the front
- D.Whether the next item has high priority
Model answer
What a good answer should say
- Whether the queue contains no items
Explanation
Why this works
Testing for an empty queue prevents an attempt to remove an item when there are no items available.
Common mistake
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