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Punjab Engineering College (PEC)
Your seniors at Punjab Engineering College (PEC) were your true well-wishers, they shared their placement interview questions for you. 🙏
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I applied via Campus Placement and was interviewed before Mar 2022.
Basic mathematics & Mental ability testing questions
I was interviewed in Oct 2020.
Round duration - 65 minutes
Round difficulty - Medium
It was 24 hours window for the online round from 8 Oct 10:30 am to 9 Oct 10:30 am. There were 7 MCQ problems related to c++, java, DBMS, and operating systems. And 2 coding problems with one easy and one moderate level difficulty for question, we were supposed to write the whole program but for other question, the function was to be written only. I was able to solve the first problem fully and the second 50%, you are required to pass test cases.
Round duration - 90 minutes
Round difficulty - Medium
The interviewer asked me questions about projects, general discussion, and 3 coding questions based on linked list, arrays, and binary tree.
I gave optimum approach for every question.
Tip 1 : First Go through all the concepts of Data Structures and algorithms, I have taken Coding ninjas course c++ interview preparation.
Tip 2 : Try to solve all the problems by yourself then it will be meant for you, if you can't solve them after 30-45 minutes of time then see the solution of it, and for this, I used to consult TA and mentors on coding ninjas course.
Tip 3 : Have confidence in yourself, if you can't solve it initially, gradually you will be able to solve the problems. Hard work pays off.
Tip 4 : Note down the main information's about your project like what you have done in the project and what difficulties you have faced, it will be a great way to tackle questions about the project in the interview.
Tip 1 : Keep it simple and mention what you actually know and achieved.
Tip 2 : Mention your institute email-id if you have, it adds weight to the resume
Tip 3 : Use the "Built/created/made X using Y to achieve Z" format when writing about projects or work done.
I applied via Campus Placement and was interviewed in Sep 2021.
I was interviewed in Sep 2020.
Round duration - 120 minutes
Round difficulty - Medium
It was a mix of mathematical aptitude, logical ability, and puzzles along with 2 programming questions of easy and medium level. Time was enough and no sectional time was present. 1-2 mcqs on SQL were also present.
This round was immediately followed by an SHL aptitude test which was basically a quick limited time check of your verbal ability and maths because many questions were to be done in 1 hour.
Round duration - 55 minutes
Round difficulty - Medium
It was an online video interview round on HackerEarth with simultaneous code option. It was mostly justifying your resume in the first 15 minutes. After that OOPS was majorly asked. Basics of programming including questions on STL were asked. A class which required inheritance was asked by the interviewer to write. I was helped by the interviewer if i got stuck somewhere, Some questions on implementation of hashmaps and priority queues were also asked. A puzzle was asked which luckily struct to me at that moment.
Tip 1 : Never give up
Tip 2 : When u start a topic, don't move on to next topic before you are 100% confident in previous topic
Tip 3 : Try to give maximum time on basics of a topic especially OOPS
Tip 4 : Practice everyday
Tip 1: Write only those things in resume in which you are 100% confident
Tip 2: Write maximum projects you have and be ready to explain them thoroughly
Tip 3: Don't make any silly spelling mistakes on resume
I was interviewed in Sep 2020.
Round duration - 90 minutes
Round difficulty - Medium
3 coding Questions:
1st : Easy question based on simple loop iteration
2nd :Medium level Dp question
3rd : Medium level tree question(where we were not just required to complete the tree function but to build whole bst from
scratch)
It was conducted from 1:30 - 3:00 pm.
The coding platform was very good (as auto indentation and auto completion of brackets were there)
having camera on.
Round duration - 75-80 minutes
Round difficulty - Hard
This was a completely technical coding round where I was asked to solve the problems of data structures.
The codepad where i was asked to code was fine,
The interviewer was very friendly and was helpful and understanding.
I also asked him about his work and experience in the company and some other questions.
Round duration - 45 minutes
Round difficulty - Easy
It was held on Gmeet platform
The interviewer was very experienced person and was very nice too.
He made me comfortable by first introducing himself in a very detailed way and then asking me mine introduction
Since I feel that his internet connection was not very good so he turned off his camera but I decided not to turn off mine as in online interviews your face reviles your confidence
the interviewer mostly asked me questions about my interests in technical field and the project that I have done
Tip 1 : Practice atleast(easy and medium questions from leetcode under(Top Interview Questions)) and all the questions from Gfg under(must to do coding questions for interviews))
Tip 2 : Don't learn each and every question you solved but try to solve question in a way that you can solve its variation during interviews
Tip 3 : Do one project(one is enough) which you can explain with full technical details (why you used this technology, and all logics you applied in implementation)
Tip 4: Atleast read the round 1 (Coding round) Archives from (Geeks for geeks or Glassdoor). To get your mind prepared for the types of questions that company usually asks.(Coding round is the toughest Step in the whole Process to clear)
Tip 1: Have at least one project which you have made yourself and you should know all the technical questions related to that project (I feel project domain hardly matters like web development or android or ML/AI)
Tip 2: You should Put only those skills in resume :
1. Which the company requires (eg if you know company doesn't require Networking domain knowledge so
don't include it unnecessary if you are not much confident in it)
2. For on campus internships resume shortlisting is very easy so don't add anything unnecessary which might
cause you pain during interview.
I was interviewed before Sep 2020.
Round duration - 90 minutes
Round difficulty - Easy
Round 1 was a coding round consisting of 3 easy questions.
Round duration - 45 minutes
Round difficulty - Medium
Interviewer asked every a number of question from OOPS and data structures.
Round duration - 30 minutes
Round difficulty - Easy
He asked me about my projects and extra-curriculars that I have done in college.
Round duration - 15 minutes
Round difficulty - Easy
Tip 1 : Practice Strings, Arrays, Dynamic Programming for coding test
Tip 2 : Practice Data Structures, OOPS, SQL for interviews
Tip 3 : Practice questions from Codezen, GFG and Leetcode on a daily basis.
Tip 1:Mention only genuine things in the resume
Tip 2:Be ready for questioning for the skills and projects you have mentioned in resume.
I was interviewed before Sep 2020.
Round duration - 90 minutes
Round difficulty - Medium
Test took place in the afternoon and the environment was so terrifying. Obviously, it would be because it was a subjective coding test. The test had it's webcam on, we were not allowed to go out of the frame. 3 coding questions were there - 1 easy, 1 medium and 1 hard.
Round duration - 60 minutes
Round difficulty - Easy
Had a face 2 face call with the interviewer.
He asked me about singleton class and asked details about linked list.
Round duration - 90 minutes.
Round difficulty - Easy
TIming was around 4PM and I was very stressed. The interviewer was good.
Round duration - 30 minutes
Round difficulty - Easy
It was late around 11:45 PM and I was all tired but excited as I was in the last round. The interviewer looked tired.
Tip 1: Find a good course, and first clear all your fundamentals and implementation of every data structure. You should be thorough with their time as well as space complexities.
Tip 2: Upon clearing the fundamentals, select a platform where you have a large no of questions, also whose test cases are good. eg. LeetCode, InterviewBit or Codezen. Go and complete 300-400 questions.
Tip 3: Also whenever you're not able to solve the problem, check out the editorial and then re-attempt it again. Also, check the discussion if there is some good solution to the same problem.
Tip 4: Most important : Compete with people on some online coding platform such as Codechef, codeforces or leetcode. It would help you in gaining a lot of interesting concepts and also improve your thinking skills.
Tip 5: Object-oriented programming is a must. One should study this as interview always asks from this domain.
Tip 6: Practicing and minimizing complexities after every solution will help you in gaining better understanding towards the question.
Tip 1: 1-2 page resume is good for a fresher.
Tip 2: Resume should contain facts, numbers, and data comparison.
Tip 3: Concise description of the projects attracts the interviewer.
Tip 4: Technical achievements in the field you're applying to, would be good.
Tip 5: DO NOT FAKE THINGS, the interviewer is smart enough.
I was interviewed before Sep 2020.
Round duration - 120 minutes
Round difficulty - Easy
It consisted of 3 coding questions which were purely based on Data Structures and Algorithms.
Question 1 - Find the length of the longest switching sub-array. An array is called switching if all numbers in even positions are equal and all numbers in odd positions are equal.
Question 2 - It was a long passage question on Dynamic Programming but the solution was really easy.
Question 3 - Given a string S consisting of N lowercase letters, return the minimum number of letters that must be deleted to obtain a word in which every letter occurs a unique number of times. Ex - "aaaabbbb" should return 1, as when we delete 1 a or 1 b , a and b will have different frequencies.
The major point to note in the coding round was that they did not have any time or space limit, so brute force solutions were also accepted.
The result of my test was declared just as the test ended and I scored a 100%, but they took a long time to release the final shortlist. There was a gap of about a week between the test and interviews.
Round duration - 40 minutes
Round difficulty - Easy
Amex came for two profiles - Tech Role and Analyst, 19 and 23 people respectively were shortlisted for the interviews. Fortunately, I was shortlisted for both the roles. I was asked basic question of C++ and it was majorly an HR Round
Round duration - 20 minutes
Round difficulty - Easy
It was a fairly simple round conssting of 5 - 6 questions related to coding, puzzles and me.
What are your interests?
What projects have you done and your field of interest?
Round duration - 50 minutes
Round difficulty - Easy
This round was purely technical
No introduction was done, straight to the point
My preference was the Tech Role, so as I was selected in this, I never had to give interviews for the Analyst role. In total 5 people were selected in the Analyst profile and 4 in the Tech profile.
In the end, I was offered a 6 months internship at Amex.
Tip 1 : Do practice a lot of data structures from renowned websites like LeetCode and also from CodeZen
Tip 2 : In your introduction, when asked, you just need to tell your life story.
Tip 3 : Maintain eye contact with the interviewers and clarify every details about the question before proceeding to the solution
Tip 1: Add most recent and relevant projects only
Tip 2: you should know each and everything written on your resume
Anonymous
posted on 14 Sep 2021
I was interviewed before Sep 2020.
Round duration - 60 minutes
Round difficulty - Medium
This round consisted of a coding test containing 2 questions purely based on Data Structures and Algorithms.
One was a Dynamic Programming Problem, and
the other one was a linked list question
Round duration - 45 minutes
Round difficulty - Easy
Introduction first
Tell me about your projects. He said you have done quite a few projects in JavaScript so tell me
Akshat what is es6 in JavaScript. I was not able to answer that.
What is bootstrap?
What is the difference between div and span tags in HTML?
How many handshakes will take place if there are 6 persons? I told him the P & C approach and then he said no please explain in the normal way so I said sir it's 1+ 2 + 3 + 4 + 5 = 15.
Reverse a String in optimal way
What is a preprocessor and preprocessor directive?
What is typedef?
Have you done exception handling? Explain
Polymorphism and inheritance and explain all types of both.
There were no questions asked on OS and DBMS in this round
Round duration - 45 minutes
Round difficulty - Easy
Your intro.
Bubble sort algorithm
Remove a specific character from all positions in a given string (3 test cases given)
Explain runtime polymorphism
Find minimum number of insertions required to make a string palindrome (he said No DP to be used)
I was able to code and explain all of them.
Make ER diagram of your 4th semester Project
He asked me if I know abt normalization
He asked me a ques on normalization, I was not able to answer it, then he asked me to write an SQL query based on the same table, I answered that
Query -> Find the maximum salary in each department, wherein the department and salary fields were in two different tables
Then he asked, tell me the different pillars of OOPs.
He asked about my projects
He saw my resume.
He asked about how the online coding test was, what were the difficulties you faced.
Tip 1 : Keep eye contact
Tip 2 : Maintain fluctuating tone so that, the interviewer shows interest in you
Tip 3 : Do practice a lot of data structures from renowned websites like LeetCode and also from CodeZen
Tip 1 : Add most recent and relevant projects only
Tip 2 : you should know each and everything written on your resume
I was interviewed in Jan 2021.
Round duration - 60 Minutes
Round difficulty - Easy
It was an online technical interview focusing on DS and algorithms. They asked two questions in this round. He also asked me to code both the questions. I solved both questions with confidence.
They also gave a puzzle to solve. Out of 32 they selected 22 students along with me.
Tip 1 : Focus on your data structure and algorithms part, these plays a crucial role in clearing the test.
Tip 2 : Don't lie on your resume.
Tip 3 : Mention one or two good projects on your resume.
Tip 1 : Have some good projects on resume and know everything about your projects.
Tip 2 : Write only what you know. Don't lie anything on resume as they will find out.
