3 Rounds onsite/ F2F

Round 1- DSA
Question- print all the diagonals from bottom to top in a 2d matrix where the length of the rows is not fixed.

Was able to solve

Round 2- DSA+ HLD
DSA question Given an array of sorted arrays. output should be duplicates in all the arrays, and the output elements should also be distinct. need to solve without extra space like set or hashmap.

Solved using two pointer

HLD - given a service that will aggregate responses from other services and other services have different latencies

Round 3- LLD
Question- Discount system on an ecommerce website with different criterias and different types of discounts that are linked via one to many and many to many.

Verdict- Made a mistake in the last LLD round wrt to relationships, hence not selected