InMobi Interview Experience | On-Campus 2021

InMobi visited our campus and conducted their interviews in December. The recruitment procedure consisted of an online screening round followed by 2 technical rounds and 1 HR round

Round 1: The online assessment consisted of three questions and the duration was 2 hours. It was held on DoSelect platform. The following questions were asked:-

1. https://cses.fi/problemset/task/1674 (Something similar to this)
2. https://www.geeksforgeeks.org/connect-n-ropes-minimum-cost/. (The only catch was that input was given in comma separated form so had to parse those)
3. https://leetcode.com/problems/cheapest-flights-within-k-stops/

After the online round 25 people were shortlisted and 25 people in extended list. Interview was scheduled on 1st December and was to be conducted on MS Teams.

Round 2: The interviewer was quite friendly and gave his introduction and asked for the same. 

• After this he asked an open-ended design question. 
• The task was to design an hospital appointment system with certain priorities for patients. 
• The main discussion point was choosing best data structures for the design purpose and object-oriented paradigms which needed to be followed.

Round 3: The interviewer was quite serious and started with DSA question. 

• The first question he posted was quite complex to understand at first but after looking carefully it boiled down to finding next smaller element concept and I told him the stack solution. He was impressed and asked for a more optimised approach which uses constant space. After few hints from his end, I came up with the code.
• After this he pasted another question which was this https://leetcode.com/problems/maximum-number-of-visible-points/. Though I have seen this question but never solved it, so I was stuck for a few minutes but then I tried to explain a mathematical approach but was not getting it right. After a few hints, I deduced that this can be done using sliding window and some general maths. I quickly coded it up and he was satisfied and asked if I have any questions.

Round 4: This was a chill HR Round and he just asked basic introduction, life in Covid times, about my projects and hobbies. This round was done within 10 minutes and after a few minutes, I got a confirmation from TnP cell that I am selected in InMobi.