Difficulty: Medium
Accolite visited our campus to hire for an intern+full time engineer role in August 2022. It was a virtual placement drive.
Around 300 students were shortlisted for the test by them. They allowed students from CS, IT and EnTC for the drive.
Round 1: This was an online test conducted on the EduThrill platform. It consisted 0f 30 easy levels MCQs from DSA, Computer Architecture, DBMS, aptitude, and 1 coding question.
Coding question:
It was a medium-level question.
The question consisted of 10 test cases and I cleared all of them.
Round 2: 14 students were shortlisted for this round which was the first technical round. The interviewer asked me to introduce myself and speak about one of the projects I had worked on.
Then she started asking questions on core subjects.
Questions:
OOPS:
- What are classes and objects?
- How is OOPS better than procedure-oriented programming?
- What are friend functions and classes?
- What are pure virtual functions in c++.
JAVA:
- What is an abstract keyword?
- What is a final keyword?
- Difference between compile-time and run-time polymorphism.
- Implement constructor overloading. Was supposed to write code with an example.
- How many catch blocks can we include while exception handling?
- When does the final block run?
- Why is the main method static in JAVA?
- In inheritance, if you create a child class object then which constructor will be called, the parent’s or child’s constructor?
Python:
- The difference between lists and tuples.
- What are different scopes in python?
DBMS:
- What is DDL?
- What is normalization?
- Difference between primary key and unique key.
- Name a few NoSQL databases.
DSA:
-
Write a program to count the number of leave nodes of a binary tree.
https://www.geeksforgeeks.org/write-a-c-program-to-get-count-of-leaf-nodes-in-a-binary-tree/amp/ -
Write a program to print a zig-zag traversal of a binary tree.
https://www.geeksforgeeks.org/zigzag-tree-traversal/amp/
I had to write proper code for the above problems.
-
Right view of a binary tree(Only approach).
https://www.geeksforgeeks.org/print-right-view-binary-tree-2/amp/ -
Write code to find the middle of a Linked list.
https://www.geeksforgeeks.org/write-a-c-function-to-print-the-middle-of-the-linked-list/amp/
I was not allowed to write code on any online compiler, was supposed to write all the code on notepad.
The interview ended with a few riddles…
- How many traffic signals are there in India?
- When does a potato change its nationality?
- A lady was born in 1975 and today she is 30 years old. How is this statement valid?
- How many liters to paint the Taj Mahal?
This round went on for 1.5 hours.
Round 3: This was the second technical round.
- Introduce yourself.
- Tell me about a project you have worked on.
Core subjects:
- Explain copy constructor.
- Shallow copy and deep copy.
- What is encapsulation?
- Explain security and Integrity in DBMS.
- Difference between DROP, TRUNCATE, and DELETE.
- Which operation is faster in computation: i++ OR i=i+1.
- Mergesort vs Quicksort: which performs better in worst-case.
The interviewer gave me a coding problem to solve and implement.
-
Given an array return the product of any 5 numbers such that the product is maximum.
Ex:
Input: 3,1,10,4,10,5,10
Output:20000
Logic:10*10*10*5*4 - https://www.geeksforgeeks.org/find-maximum-product-of-a-triplet-in-array/amp/
I was given the above question but instead of triplet, I was supposed to do it with 5 numbers.
This round went on for 45 minutes.
Round 4: This was the last technical round.
- Introduce yourself.
- Explain a project.
The interviewer wanted to know about my understanding of Databases and SQL.
- Imagine you are designing a library management system. Design a schema for the system.
We started discussing which tables should be created and the attributes they must consist of. I designed 4 tables then the interviewer asked me to remove redundant attributes and cross-questioned me regarding the primary and foreign keys of all tables.
Finally asked me to write a query to retrieve the books allocated to a student named=”ABC”.
Struggled for 7-8 minutes because 2 tables were involved to complete the query but wrote the query using joins and nested query.
It was more of a discussion with a lot of input from the interviewer which went on for half an hour.
Round 5: This was the final HR round with typical HR questions
- Tell me about yourself
- A project you have worked on
- Why do you want to join accolite.
- Strengths and weaknesses
- Have you ever worked in a pressure situation?
- How did you utilize your time in lockdown?
Finally, she explained to me about company policies, culture, and salary components.
Accolite hired 3 students out of the 14 and I was one of them.
Tips:
- Study binary trees, linked list, searching-sorting, OOPS, DBMS and SQL thoroughly for Accolite, their interview revolves around these topics.
- Study your projects enough to be able to have at least 10 minutes of discussion with the interviewer.
- Every round is an elimination round so try to give your best in each round.