microsoft · software-engineer

Data Structures

Arrays, trees, graphs, and hashing.

Medium: 2

Concept Refresher

Read the concept summary before diving into questions to answer with clarity.

Topic Roadmap

learn

Data Structures Essentials

Focus on data structures fundamentals for this role.

Practice Questions

Given a stream of integers, design a data structure that can return the top-K elements at any time. Explain the time and space trade-offs.

heap, streaming, top-k

How would you design a rate limiter that supports burst traffic and quick lookups?

rate-limiting, token-bucket, redis

Test Your Knowledge

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