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Java: In Java, which comparison about ArrayDeque as a Queue is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Java, which comparison about ArrayDeque as a Queue is accurate?

  1. There is no practical difference in behavior, performance, or API design when ArrayDeque as a Queue is involved.
  2. The oldest option related to ArrayDeque as a Queue is always the right production choice regardless of context.
  3. It is usually a better default queue than LinkedList because it avoids per-node allocation and pointer chasing.
  4. Differences around ArrayDeque as a Queue are mostly cosmetic, so correctness and maintainability do not change.

Hint

Focus on the behavior or tradeoff, not just the keyword.

Answer and rationale

Correct answer: C. It is usually a better default queue than LinkedList because it avoids per-node allocation and pointer chasing.

It is usually a better default queue than LinkedList because it avoids per-node allocation and pointer chasing. This is the comparison that usually separates memorization from understanding.

Track: Java