Design a stack that supports push, pop, getMiddle, and getTop in O(1) time.
Data Structures
Round 2
Leadership PrinciplesCodingObject-Oriented Design
The candidate was asked to refactor a standard algorithmic solution into an object-oriented design.
The interviewer expressed concern that the candidate's approach was too similar to standard textbook solutions, suggesting a preference for unique or highly optimized architectural thinking.
Round 3
BehavioralSystem Design
The interviewer probed extensively into the candidate's career history, specifically questioning the frequency of job switches.
The candidate navigated NDA-sensitive project discussions by focusing on architectural trade-offs (why X was chosen over Y) rather than proprietary details.
The design portion required the candidate to propose two solutions for a feature extension and perform a comparative analysis of pros and cons.
Questions Asked
Key Takeaways & Advice
Candidate Advice
Be prepared to defend architectural decisions and explain the 'why' behind technology choices in previous projects.
When discussing past work, prioritize explaining trade-offs over revealing confidential implementation details.
Ensure OOD solutions are robust and demonstrate original thinking rather than just implementing standard textbook patterns.