Two on-campus tech rounds, medium questions but difficult puzzles, supportive interviewers

Application

I applied through university. I interviewed at Zomato (New Delhi) in Aug 2020

Interview

There were two tech rounds it was on campus shortlisting for the interview round the process was very smooth, interviewer was very Frank and supportive in both the rounds , questions was of medium level but puzzles was difficult

Interview questions [1]

Question 1

Some puzzles and stack design