The coding question I got was: ``` class IPv4Iterator: def __init__(self, startIp): # Initializes the iterator with the startIp. # The first address yielded by the iterator must be exactly startIp. pass def hasNext(self): # Returns true if there is at least on...
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## Preparation Tips & Key Takeaways ### What I Learned - It's important to understand the trade-offs between different KV store implementations for payment systems. - Consider different consistency models for different parts of the system. ### Recommended Prep...
This was a recent onsite interview experience. The interview covered two main areas: **Part 1: Version Dependency** I was given three types of testing cases: simple, large, and interesting. * I used binary search on a flattened list. Originally, a linear searc...
I had an HR intro chat. The recruiter described the interview process: two technical screening rounds (coding-based). The first is an ML coding round, and the second consists of three back-to-back coding interviews (one ML, two general coding). The final stage...
The coding question was a new problem involving overlapping key ranges in a sharding system. The problem involved a `Shard` class with `id`, `start`, and `end` attributes, and a `Shards` class with methods to `add_shard`, `remove_shard`, and `rebalance`. The g...
The coding question I received was: ``` allocator(size=1000) malloc(size) -> pointer free(pointer) -> bool ``` The question was a memory allocator problem. Initially, I proposed a linked list solution with O(n) time complexity. The interviewer wasn't satisfied...
## Preparation Tips & Key Takeaways ### What I Learned - Ensure I am comfortable with standard data structures and algorithms. - System design interviews require understanding of real-world systems. - Practice behavioral questions to clearly articulate my expe...
In the first interview, due to technical difficulties with Google Chrome, I had to switch to Safari, which caused a few minutes of delay. Despite that, I managed to finish the question just in time. In the second interview, one of the four bugs was a subtle ty...
Here's a breakdown of the ML coding questions I encountered during my onsite interview: **Round 1: Entropy Calculation** * Given logits, calculate entropy (using the log-sum-exp trick for numerical stability). * How would you calculate entropy online if logits...
I was asked to implement a simulation for a grid infection scenario. (1) Given an m x n grid with 'X' (infected) and '.' (healthy) cells, each day the infection spreads to all 8 neighboring cells (including diagonals). A healthy cell becomes infected if it has...
