The coding questions I encountered were: 1. Implement an iterator that merges favorites and photos lists (yielding favorites first), while filtering out blocked IDs and ensuring no duplicates. 2. Find the median of two sorted Run-Length Encoded (RLE) arrays. E...
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The first round was a pure coding challenge, a LeetCode Hard problem involving a combination of data structures and algorithms. It required designing appropriate data structures and completing the statistics within given time complexity constraints. I was ques...
## Technical Phone Round Details The first interviewer didn't introduce themselves but asked me to introduce myself. Then they asked me to design a fraud detection system. This included questions about cold start and imbalanced data. The recruiter said this ro...
The coding question I received was: Given a tree, calculate the sum of the distances from each node to all other nodes. **My Approach:** 1. **Baseline (Non-Optimal):** * I initially suggested performing a BFS/DFS from each node to calculate the sum of distance...
The coding question I got was: 1) **Main Problem (similar to LeetCode 778 - Swim in Rising Water)** Given a grid representing a state map, find the path from the start to the end where the path cost is not the sum of the paths, but the "maximum/worst value enc...
## Preparation Tips & Key Takeaways ### What I Learned - I need to be prepared to discuss my past projects in detail, focusing on the impact and challenges. - I should have a solid understanding of experimental design principles, especially in the context of A...
I interviewed for a backend role and was ultimately rejected after four rounds. Here's a breakdown of my experience: **Round 1: DSA (Topological Sort)** I was asked a standard topological sort problem, similar to a combination of Course Schedule I and II. The...
The coding question I got was: Find the minimum number of workers needed to achieve maximum efficiency using binary search. **My approach:** 1. I first clarified the constraints and edge cases. 2. Then I implemented binary search to find the optimal number of...
The interviewer gave a short product catalog scenario and then introduced the task. The question was Find Highest Shared Product ID: https://www.chillinterview.com/learn/coding-interview-questions/find-highest-shared-product-id. I was asked to determine which...
The interviewer opened by asking about my experience with dashboards and high-volume query systems. The question was Fast Interval Coverage Counter: https://www.chillinterview.com/learn/coding-interview-questions/fast-interval-coverage-counter. I was given ran...
