The prompt described a mutable list supporting append, transform-all, and get operations. A naive solution applies every transformation immediately, but the interviewer pushed toward deferring transformations and composing them efficiently. I kept a queue of p...
Showing 21-30 of 43 forum items
I had five rounds in total. - Round 1: Lazy array problem. - Round 2: File system problem. - Round 3: Design Google Drive/Dropbox. - Round 4: Behavioral questions: hardest challenge, biggest mistake, feedback you don't agree on. - Round 5: Log writer problem....
## Preparation Tips & Key Takeaways ### What I Learned - I should have prepared more behavioral questions to better handle the final round. - Understanding tree data structures and key-value store designs is crucial for Databricks interviews. ### Recommended P...
The interviewer presented a stream of earning events and asked me to support adding revenue, correcting a previous amount, and returning the current top earners. I used a hash map for authoritative totals and a heap for ranking, with lazy deletion for stale en...
**Round 1:** I was given a set of node groups (e.g., `[[1],[2,3],[4,5,6]]`) and had to connect all groups into a connected graph. The connection method was to randomly select one node from two different groups and create an edge. The requirement was to connect...
I was asked to design a stock trading system, assuming there's a third-party stock API available with POST (to return unique ID), GET (to return order details), and DELETE (to cancel the order) functionalities. The main focus was on how to handle pending and e...
This was an online assessment style round for Databricks. The prompt gave sensor readings with timestamps and repeated values, then asked for a compact representation plus a restore function. I focused on making the encoding unambiguous and wrote tests for sin...
I had a phone screen where I was asked about a commonly asked coding question (which I saw at https://www.chillinterview.com/learn/coding-interview-questions/ordered-network-access-policy). The interviewer kept probing for corner cases. During the onsite inter...
The job search in the US has been incredibly challenging. **Phone Screen:** I was asked the optimal commute problem, and the follow-up was what to do if turning has a cost. I scheduled the virtual onsite after completing the phone screen. **Virtual Onsite:** *...
I interviewed with a staff engineer. The first question was LeetCode 567, which I solved quickly. The follow-up question was to return all possible permutation combinations. I initially suggested using a sliding window, but I struggled to implement it. I event...
