HashedIn Interview Experience (On-Campus)

Round 1: Coding Assessment

• There were three coding questions from medium to hard level.
• The first question was based on the circular array. (easy)
• The second question was based on the string. (Medium)
• The third question was based on the string. Related to the question given in the link. (link – https://www.geeksforgeeks.org/length-of-the-longest-substring-with-every-character-appearing-even-number-of-times/) (Hard)

Out of 422 students, only 45 students were shortlisted for round 2

Round 2: First Technical Interview

• In this round, the First interviewer asked me to introduce myself.
• In the first 5 mins, I introduce myself to the interviewer.
• After that, he asked me about my subject of interest. I told him about the operating system, database, and machine learning.
• Then, He asked me about the Operating system concepts ( Virtual memory, paging, and segmentation, page fault, I scheduling algorithms, page replacement algorithms )
• I gave all the answers.
• After that, he asked me about the database management system concepts (Normalization, which data structure we can use to create a database from scratch?)
• First I told them we can use the data dictionary to create a database from scratch but that wasn’t the correct answer, So the interviewer told me that we can use B+ trees to create a database from scratch.
• After that, he asked me about the coding question (https://www.geeksforgeeks.org/given-an-array-of-numbers-arrange-the-numbers-to-form-the-biggest-number/)
• I wasn’t able to solve that question in the given time.
• Then, he asked me another question which was based on the linked list (https://www.geeksforgeeks.org/detect-loop-in-a-linked-list/)
• I was able to solve this question. After that, he was done with my interview.

Round 3: Second Technical Round

• This round was really cool and the interviewer was also very friendly. This interview was more like a discussion.
• The interviewer asked me to create a database of any OTT platform I like.
• I choose Amazon prime and created a database design of the same.
• So, I started with writing all the features and tables it should have and after that, I build different kinds of relationships between the tables, after creating tables, there were so many faults that have to be resolved so, I normalized the tables and remove the faults with some help of interviewer.
• After that, Interviewer asked me different concepts of database (Normalization, concurrent transactions, Rollbacks, ACID properties)
• After that, he asked me about different kinds of data structures used in python.
• Difference between Array and linked list.
• How the linked list is better than an array.
• After that, he was done with my interview and asked me if I have any questions. So, I asked questions like how is the work culture at Hashedin and what kind of projects Hashedin works on.

Round 4: HR Round

• She asked me about myself.
• My family background
• my hobbies
• The lowest point in my life
• Things that keep me motivated
• Technology I worked.
• famous things(places, food) about my city.
• why Hashedin?

Currently, I am waiting for my final result whether I got selected or not.

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