Inmobi Interview Experience | Set 5 (Through College Test)
Interview Experience
I recently got an opportunity of being interviewed at Inmobi after getting shortlisted for the Inmobi codies test. I was called for onsite interviews at their Bangalore of...
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I recently got an opportunity of being interviewed at Inmobi after getting shortlisted for the Inmobi codies test. I was called for onsite interviews at their Bangalore office. The process consisted of 3 technical rounds and 1 HR round.
Round 1 Tell me about yourself Discussion on my current work and previous projects. Detect loop in a linked list Given a sorted array of 0's and 1's, find the last index of 1. eg: 1 1 1 1 0 0 0 Here the last index of 1 is 3.
Round 2 Given some user preference categories (like sports, music) which can be further subdivided in to sub-categories up to any level. Where each category/ sub-category can have users associated with it. Given a user id, find the complete path of user preference. The preference may change any time. The search time should be O(1) Given a number line from -infinity to +infinity. You start at 0 and can go either to the left or to the right. The condition is that in i’th move, you take i steps. a) Find if you can reach a given number x b) Find the most optimal way to reach a given number x, if we can indeed reach it. For example, 3 can be reached on 2 steps, (0, 1) (1, 3) and 4 can be reached in 3 steps (0, -1), (-1, 1) (1, 4). Some basics questions on oops.
Round 3 Tell me about yourself Brief discussion on my projects Given an array of number, where a set can be like: s = {A[i], A[A[i]], A[A[A[i]]]....} Find the set with the maximum cardinality. How will you model this as a problem in graph? You are given continuous stream of numbers, find median of the numbers read so far after reading each element. Puzzle: Given N buckets each with infinite number of balls. All the containers contain balls with 10 g expect one which contains balls with 15 g. Find the container with 15 g balls. There is beam balance, which you can use only once. Round 4:(HR) Tell me about yourself What does Inmobi do? Why Inmobi? Why should we hire you? If you are made team lead of a project, how will you handle it. Given a situation where you performed more than expected out of you. You biggest failure. What would you want to improve about yourself? And some more behavioral questions which I cant remember :) . Overall it was a great interview experience. PS. It is not important you reach the optimal solution at the first shot, you may start with brute force approach which will help you find the optimal solution. Also think aloud :) Related Practice Problems Last index of One Minimum number of steps to reach a given number.
About This Question
This is a candidate experience report from a inmobi interview for a swe role during the recruiter round reported in 2025.
It covers the following topics: Graphs, Linked List, Arrays, Graph .
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About Inmobi Interview Reports
This question was reported by a candidate who interviewed at Inmobi. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.
Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at Inmobi are the higher-signal extractions to take from this report.
For broader preparation context, the Inmobi interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.
How To Practice This Type of Question
Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.
Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in Inmobi reports consistently are the ones worth investing in; one-off niche problems are not.
During Your Inmobi Round
Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.
The single most predictive failure mode in Inmobi reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.