Learning objective
Queues: Be able to describe and apply the following to linear queues, circular queues and priority queues: • add an item • remove an item • test for an empty queue • test for a full queue. 48
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Queues
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Queues
Aqa A Level Computer ScienceFundamentals of data structures
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Quick explanation
Queues: Be able to describe and apply the following to linear queues, circular queues and priority queues: • add an item • remove an item • test for an empty queue • test for a full queue. 48
- This point belongs to Queues, especially Queues.
- You need to be able to queues: Be able to describe and apply the following to linear queues, circular queues and priority queues: • add an item • remove an item • test for an empty queue • test for a full queue. 48.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Why it matters
This objective helps connect Queues to exam-style questions, flashcards, and revision notes for Queues.
Quick student answer
In a linear queue, where is a newly added item placed?
Direct answer
At the rear of the queue
Key terms
- Circular queue: A queue in which the rear can wrap around to the beginning of the storage area so that freed positions can be reused.
- Priority queue: A queue in which items are removed according to their priority rather than only according to their arrival order.
Common trap
Confusing full and empty tests: Test for full before an add operation and test for empty before a remove operation.
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