Trilogy Innovations interview experience Real time questions & tips from candidates to crack your interview

SDE - Intern

Trilogy Innovations
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4 rounds | 3 Coding problems

Interview preparation journey

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Preparation
Duration: 2 months
Topics: DSA, OOP, DBMS, System Design, Aptitude Tests
Tip
Tip

Tip 1 : Give regular programming contests. Try to achieve Codeforce Candidate Master level or equivalent
Tip 2 : Learn/Practice DSA.
Tip 3 : Do at least 2 projects on your resume, on topics such as ML, NLP, Dev etc

Application process
Where: Other
Eligibility: NA
Resume Tip
Resume tip

Tip 1 : Mention atleast 2 good projects and be thorough with them.
Tip 2 : Mention CP contest rankings or ratings

Interview rounds

01
Round
Hard
Online Coding Interview
Duration15 minutes
Interview date4 Feb 2021
Coding problem0

The round name was PCCAT - Proctored Criteria Cognitive Aptitude Test. It was a 15 minutes round with 50 questions. 
Questions were based on aptitude testing in the section of Mathematics, Reasoning and Vocabulary.

The difficulty level of questions - Easy

The difficulty level of the round - Hard. As 15 minutes is very less time to go through all 50 questions and the cutoff is set to 45, making it a near-impossible task.

02
Round
Easy
Telephonic
Duration10 minutes
Interview date10 Feb 2021
Coding problem0

This round was basically a brief discussion of resumes. We discussed all the projects I mentioned in my resume and tech stack used to complete the project.

03
Round
Medium
Video Call
Duration60 minutes
Interview date4 Mar 2020
Coding problem2

Two DSA problems of difficulty rating of 1500-1800 on Codeforces.

1. Find K Closest Elements

Moderate
15m average time
85% success
0/80
Asked in companies
AmazonMorgan StanleyOptum

You are given a sorted array 'A' of length 'N', two integers 'K' and 'X'. Your task is to print 'K' integers closest to 'X', if two integers are at the same distance return the smaller one.

The output should also be in sorted order

Note:
An integer 'a' is closer to 'X' than an integer 'b' if: 
|a - X| < |b - X|  or (  |a - X| == |b - X| and a < b )
For Example:
if X = 4,  3 is closer to 'X' than 9, as |3-4| < |9-4|  i.e., 1 < 5   and if X = 4, 2 and 6 are equally close to it, as |2-4| == |6-4| = 2, but we say 2 is closer to 4 than 6, as 2 is smaller.
Problem approach

I proposed the following solution - 
Perform a binary search on distance. In each iteration of the binary search, check how many pairs have a distance less than mid and then update low and high bounds in accordance with K.

Try solving now

2. Random point generator.

Moderate
30m average time
70% success
0/80
Asked in companies
FacebookTrilogy Innovations

Mr. Schrodinger recently developed a new hypothesis. For testing his hypothesis he needs some points inside a particular circle. For good testing, points should be uniformly distributed, i.e. evenly distributed inside the circle. So you as an assistant are asked to implement a random point generator function that will do the task.

More formally, you need to implement a function that will generate uniformly distributed random points inside the given circle.

Note:

A point on the circumference of a circle is considered an inner point.
Problem approach

Let y be the smallest integer such that 2^y >= N.

So, we will call G(y) till we get a number in the desired range.

Follow-up - Expected Number of calls to G before we get a number in the desired range.

Try solving now
04
Round
Medium
Video Call
Duration45 minutes
Interview date19 Mar 2021
Coding problem1

This round was majorly based on my resume discussion. It was with a senior VP. We had an in-depth discussion on my past interview experiences, my projects etc.

1. Basic HR Questions

What are your expectations?

Who is your role model?

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

Skill covered: Programming

What is recursion?

Choose another skill to practice
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