The whole process had a total of 4 rounds. One Coding round and 3 interview rounds(2 technical + 1 HR).
1st Round
This was a coding round hosted on the Hackerrank platform held in the CCC lab. A total of 3 questions were to be solved in a span of 90 minutes. In my case, the questions were on the topics
- A cakewalk brute force question solved using simple quadratic equations formula.
- An easy-medium question that was based on the priority queue of queues.
- A medium-level question based on “Binary-Search on answer”. Somewhat similar to this question- https://leetcode.com/problems/minimum-!me-to-complete-trips/
2nd Round
Firstly, I was asked to introduce myself and then about my primary language in DSA (C++) and web development (JavaScript).
- This round mainly focused on my OOPS skills. I was asked to define and implement(on hacker-rank code pair) different OOPS concepts like- inheritance with its types, virtual functions, friend functions, and static keywords. This thing took about half an hour.
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Then he asked some questions on system design
- Difference between horizontal and vertical scaling.
- How will you synchronize ticket booking across multiple locations in the IRCTC app?
- Some questions on Operating systems- Diff b/w Process and Threads, Semaphores (with an example).
- What is a DDoS attack?
P.S- No DSA question was asked 🙁
3rd Round
I was asked to introduce myself.
I Was Grinded on theory concepts (SDLC, OS, DBMS) for a long time. Some questions(that I remember) were-
- What is testing and what types of testing?
- Stages of SDLC.
- Semaphores.
He gave me 2 puzzles to solve-
- How can you make 3 equilateral triangles using 6 matchsticks without breaking them?
- Hourglass puzzle on GFG ( h+ps://www.geeksforgeeks.org/puzzle-27-hourglasses-puzzle/ ).
P.S- Again no DSA question asked 🙁
4th Round
In this round, the interviewer was a highly experienced individual. He is a VP of some department(I forgot). I was asked to introduce myself.
- Previous internship experience.
- Questions on my project’s concepts.
- What was your one mistake that you regret now?
- Question about hobbies and my interests.