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Java: Which statement about Monotonic Stack is the strongest interview answer?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which statement about Monotonic Stack is the strongest interview answer?

  1. Monotonic Stack is mostly a naming style choice and has little effect on runtime or design.
  2. Monotonic Stack exists mainly to reduce the number of Java files in a project.
  3. Monotonic Stack matters only for frontend frameworks, not for core Java applications.
  4. A monotonic stack keeps elements in increasing or decreasing order so it can answer next-greater or next-smaller style queries efficiently.

Hint

Start with the core rule behind Monotonic Stack.

Answer and rationale

Correct answer: D. A monotonic stack keeps elements in increasing or decreasing order so it can answer next-greater or next-smaller style queries efficiently.

A monotonic stack keeps elements in increasing or decreasing order so it can answer next-greater or next-smaller style queries efficiently. This is the base concept interviewers commonly test first.

Track: Java