I applied through an employee referral. The process took 2 weeks. I interviewed at Trilogy Innovations (Gurgaon, Haryana) in Jun 2018
Interview
I interview with CodeNation in June via employee referral. I gave 3 rounds of interview.
1. Round 1 was mainly on projects and what I have been currently doing at my current company.
2. Round 2 was an Algo DS round . It was a pretty tough one . Interviewer was quite sound with competitive programming and asked similar mathematically tough questions. I dont get whats the use of asking such questions during live interview. You love competitive programming doesnt means everyone love. These questions were not at all testing my knowledge of DS and Algo.
3. Another Algo DS round was scheduled. This time questions were interesting and quite logical. Interview went pretty good. But this was one of the most unprofessional interview I ever gave. Seemed like interviewer was constanatly making fun of me asking silly optimisations and after that saying he was just joking, no optmisation is requirer ! Are you kidding me !
Next day I got a rejection mail from the HR. Overall one of the most unprofessional interview that I ever gave. I wonder why no experienced people are present in the company.
Interview questions [1]
Question 1
Round 1 Algo questions.
1. You are given an array and a function which reverses the array. We have to sort the array using the reverse function. We have to return the minimum no of calls to function in which array can be sorted.
2. Given a graph in which there is an edge between (u,v) if gcd(u,v)>g . Given queries of u,v find if a path from u,v exists.
R2: 1. Given a string find length of longest substring.
2. Given a binary string of 0 and 1 . Find longest substring which contain equal number of 0 and 1.
3. Given an immutable array of size n+1, containing numbers between [0,n]. Find any one number that repeats.
It was quite nice actually; the interview went smoothly, the panel was friendly and supportive, the questions were relevant and engaging, and I felt confident expressing my thoughts clearly while maintaining a calm and positive mindset throughout.
I applied through university. I interviewed at Trilogy Innovations (New Delhi) in Mar 2026
Interview
It was tough toal 7 rounds there were and the dsa is tough Trilogy interviews are very practical and performance-based, not just theory.
They usually include:
✅ Aptitude + logical reasoning
✅ Coding / problem-solving test
✅ Real-world simulation tasks
✅ Communication + decision-making scenarios
I applied through university. I interviewed at Trilogy Innovations (Hyderābād) in Feb 2026
Interview
Attempted DSA round, given 4 questions completion time is 2 hours.
1.First question is easy to medium (for 50 marks)
2.Second and third medium difficult(for 100 marks)
3.Fourd question difficult (for 150 marks)
Eligibility criteria 2/4
