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Java: Which statement about Hash Tables and Hashing is the strongest interview answer?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which statement about Hash Tables and Hashing is the strongest interview answer?

  1. Hash Tables and Hashing is mostly a naming style choice and has little effect on runtime or design.
  2. Hash Tables and Hashing exists mainly to reduce the number of Java files in a project.
  3. Hash Tables and Hashing matters only for frontend frameworks, not for core Java applications.
  4. A hash table maps keys into buckets using a hash function and then resolves collisions among keys that land together.

Hint

Start with the core rule behind Hash Tables and Hashing.

Answer and rationale

Correct answer: D. A hash table maps keys into buckets using a hash function and then resolves collisions among keys that land together.

A hash table maps keys into buckets using a hash function and then resolves collisions among keys that land together. This is the base concept interviewers commonly test first.

Track: Java