CleverTap Backend Engineer interview questions

I was first invited for an online screening round on interviewbit. The test had 2 questions, which were to be solved in an hour This round was followed by 2 technical rounds. Both of them were on DSA, OOPS and other CS Fundamentals. Each round lasted around an hour and the interviewers were very engaging in the discussion After these technical rounds, I had a HR round with the usual HR round questions After the HR Round, I was called for another tech round for some more questions. This round was also on DSA

I have given two rounds after which they rejected me, 1. Interview bit question very basic 2 question, one was merging two sorted array and another was very simple insert and search in a map. 2. Asked about sorting algos and their complexity, explaining merge sort, hash map, deadlock.