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Java: What deeper point about ArrayDeque as a Queue should a senior Java developer mention?

Difficulty:

Hard

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

What deeper point about ArrayDeque as a Queue should a senior Java developer mention?

  1. At senior level, the right answer is that ArrayDeque as a Queue exists mostly for historical syntax reasons.
  2. A strong answer mentions that the same deque can support both queue and stack semantics without changing the underlying structure.
  3. At senior level, the JVM removes the tradeoffs around ArrayDeque as a Queue, so design choices barely matter.
  4. At senior level, any approach to ArrayDeque as a Queue is equally correct if it compiles and passes a small test.

Hint

Look beyond syntax and explain the runtime, API, or design consequence.

Answer and rationale

Correct answer: B. A strong answer mentions that the same deque can support both queue and stack semantics without changing the underlying structure.

A strong answer mentions that the same deque can support both queue and stack semantics without changing the underlying structure. This is the kind of tradeoff-aware answer senior interviews usually expect.

Track: Java