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Java: Which statement about Heap Operations and Invariants is the strongest interview answer?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which statement about Heap Operations and Invariants is the strongest interview answer?

  1. Heap Operations and Invariants is mostly a naming style choice and has little effect on runtime or design.
  2. A heap maintains a parent-child ordering invariant so the top element can be accessed efficiently.
  3. Heap Operations and Invariants exists mainly to reduce the number of Java files in a project.
  4. Heap Operations and Invariants matters only for frontend frameworks, not for core Java applications.

Hint

Start with the core rule behind Heap Operations and Invariants.

Answer and rationale

Correct answer: B. A heap maintains a parent-child ordering invariant so the top element can be accessed efficiently.

A heap maintains a parent-child ordering invariant so the top element can be accessed efficiently. This is the base concept interviewers commonly test first.

Track: Java