https://leetcode.com/problems/copy-list-with-random-pointer/description/
I implemented the hashmap based approach but the interviewer asked if could do it in O(1) space complexity. I could not figure it out on the sport and only saw the interleaving soltuion after coming home.
https://leetcode.com/problems/lfu-cache/description/
Discussed the approach and wrote the code. It felt more like a DSA round.
Design the dynamic pricing system
Standard behaviour, situation based questions.
Overall process was good, my recruiter super nice and accomodating.
Only thing which was annoying was that they were pushing very hard to complete all rounds asap, but when the process completed it took them 2.5 weeks to roll out the offer.
Offer Details: https://leetcode.com/discuss/post/7384531/walmart-sse-bangalore-oct-2025-declined-nmd3t/