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Java: In Java, which comparison about Top-K with a Heap is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Java, which comparison about Top-K with a Heap is accurate?

  1. There is no practical difference in behavior, performance, or API design when Top-K with a Heap is involved.
  2. The oldest option related to Top-K with a Heap is always the right production choice regardless of context.
  3. Differences around Top-K with a Heap are mostly cosmetic, so correctness and maintainability do not change.
  4. Top-k with a heap is more space-aware than sorting the full input when only a small subset is needed.

Hint

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

Answer and rationale

Correct answer: D. Top-k with a heap is more space-aware than sorting the full input when only a small subset is needed.

Top-k with a heap is more space-aware than sorting the full input when only a small subset is needed. This is the comparison that usually separates memorization from understanding.

Track: Java