OOPs, DBMS, DSA questions plus a Zomato-like website system design question

Application

I applied online. I interviewed at Zomato (New Delhi) in Apr 2021

Interview

i was asked basic questions related to oops,dbms,and some dsa questions . interviewer waas friendly though he helped me while i was stuck with some question. he asked me what is data abstraction, how can you design a zomatoe website

Interview questions [1]

Question 1

coin change problem linked list reverse