HR schedule full loop during a drive. It was on saturday. 4 rounds.

1. Coding:-
   2. Longest increasing subsequence with greatest sum
   3. Longest substring with same elements.
      4. longest substring with unique elements
      5. longest subsequence with unique elements.
2. Coding + Design
   3. Given two apis:-
   4. getSubCategories(String category)
   5. getProductsForCategory(String category)
   6. We will need to implement getProductTree(String Category, Integer depth)
   7. what happens if data is very huge.
   8. Scope for parallelisation to improve response time.
   9. Clients complain that only partial data is sent(like tree is printed only for 3 levels instead of 5 levels). How can that happen?
3. HLD round
   11. asked to describe one project at current company on high level
   12. what is the complex project i worked on.
   13. Design stack overflow
       14. Capability to ask questions, upvote/downvote. Capability to answer questions, support comments on the questions, upvote/downvote.
       14. how to get questions and answer by paginated results. Answers sorted by no of upvotes/downvotes
       15. concentrated on data model
       16. how the questions are stored
           17. how the answers are stored.
4. HM round
   19. why move to cloud
   20. monolith vs microservices
   21. etc