Browse hash maps interview questions and explore the world's largest library of mock video interview recordings.

Watch others solve Hash Maps interview questions, see how they did, and learn from their mistakes.

Airbnb Interview in C++Missing item list difference

Advance this person to the next round?

Technical Skills:

4/4

Problem Solving Ability:

4/4

Communication Ability:

3/4

Google Interview in JavaMost frequent integer and pairs of integers sum

Advance this person to the next round?

Technical Skills:

4/4

Problem Solving Ability:

4/4

Communication Ability:

4/4

FAANG Interview in JavaMinimum Window Substring

Advance this person to the next round?

Technical Skills:

4/4

Problem Solving Ability:

4/4

Communication Ability:

4/4

Get step-by-step instructions on how to approach and solve common technical interview questions.

MEDIUM

Data Structures and Algorithms

K Closest Points To Origin

Given a list of tuples that represent (X, Y) coordinates on an XY plane and an integer K, return a list of the K-closest points to the origin (0, 0).

ORDERED MAPSHEAPSHASH MAPSBUCKETSHEAPS (PRIORITY QUEUES)

Watch 7 interviews

MEDIUM

Data Structures and Algorithms

Three Sum

Given an array of integers, return an array of triplets such that i != j != k and nums[i] + nums[j] + nums[k] = 0.

ARRAYSSORTINGHASH MAPSSEARCH

Watch 1 interview

EASY

Data Structures and Algorithms

Two Sum

Given an array of integers, return the indices of the two numbers that add up to a given target.

ARRAYSSEARCHHASH TABLES

Watch 5 interviews

MEDIUM

Data Structures and Algorithms

Insert Delete getRandom O(1)

Design and implement an efficient sampler that works in average O(1) time complexity.

ARRAYSHASH MAPSSEARCH

Interview prep and job hunting are chaos and pain. We can help. Really.