HashedIn by Deloitte interview questions

It was On campus...! The process take 2 days. On First day there was OA with 3 Questions 1.On strings (Med) 2.2D Array[easy] 3.Graph Based Question with Backtracking. And Next day it was Interview of 3 rounds 1 Round: They ask about projects,Database(Join(syntax)] And asked DSA problems to write on paper and Solve on their own Editor. DSA Problems are mostly on Strings (med), 2 D array Operations related problems. 2 Round: System Design Questions,Asked to Write MongoDB Queries, and design Database of Amazon site etc. 3rd Round: HR round

3 rounds, one focused on programming. Asked data structures, algorithms and a bit about myself. Second one was focused on system design round. Third was the HR round, focused on why I wanted to join HashedIn and my resume.