Skip to content
Related Articles

Related Articles

Improve Article

HackWithInfy SES Interview Experience 2020 ( Zone – Chennai )

  • Difficulty Level : Medium
  • Last Updated : 19 Nov, 2020

Hackwithinfy is a contest that was conducted by Infosys every year for final year students. It consists of 3 rounds. I applied through their website.

Round 1 – Online Coding round (Easy) 3hrs: It was held on the Hackerearth Platform. This round comprises  3 questions that vary in difficulty level. Since that time I was doing competitive programming intensively on various sites like codeforces.com, codechef.com, atcoder.jp, it was helpful to solve their problem. I have solved 3 Problems in that round. Those who have solved at least 2 problems shortlisted to the next round.  Nearly 20, 000 students selected out of 2,00,000 participants.

Hey geek! It's time to become a success story instead of reading them. Check out our most renowned DSA Self Paced Course, now at a student-friendly price and become industry ready. And if you are looking for a more complete interview preparation resource, check out Complete Interview Preparation Course that will prepare you for the SDE role of your dreams!

Feeling prepared enough for your interview? Test your skills with our Test Series that will help you prepare for top companies like Amazon, Microsft, TCS, Wipro, Google and many more!

Round 2 – Online Coding round (Intermediate) 3hrs: It was also held on the Hackerearth platform. This round comprises 3 questions. It was quite difficult compared to the 1st round.  Questions were asked on this topic (DP, Graph, Number theory). Solving 1 and half a question can make selected for an interview. Nearly 4000 students selected out of 20,000. 



Round 3 – Virtual Interview: It was conducted on the Infosys meridian platform. Mine was scheduled for 21st Oct 2020.

Interviewer: Hi, What is your favourite subject?

Me: Data structures and algorithm sir. 

Interviewer: Okay, then tell me what is the red-black tree?

Me: It is a balanced tree sir, we can do any operation in LogN time complexity. (Somewhat managed).

Interviewer: Okay, What do you mean by a balanced tree?

Me: Yes sir, if the difference between the height of the left subtree and right subtree is less than or equal to one. then it is called a balanced tree.

Interviewer: Okay. Can you share your screen?



Me: Yes sir.

Interviewer: Okay. Can you write a program to traverse a tree? 

Me: After 3 mins I wrote inorder traversal and explained my code to him.

Interviewer: Let’s assume you have a sorted array, if you want to have a sorted array using selection sort what is the time complexity?

Me: I told O(N^2) ( But he’s asking again and again are you sure???). I was confused and then realizing that it was already sorted, So no need to sort the array. Then I told O(1) sir.

Interviewer : (Smiled)

Me: Me too (Smiled). 

Interviewer: Then I write a program for selection sort? 

Me: After 3 mins I wrote it and explained it to him.

Interviewer: Ok. Let’s move to Computer Networks.



Me: Sure sir (with a smiley face).

Interviewer: What is the difference between TCP and UDP ? 

Me: TCP is a connection-oriented protocol and UDP is not a connection-oriented protocol

Interviewer: Tell me OSI Layers : 

Me: Told only 6 layers. I forgot one layer. (It was session layer)

Interviewer: Okay. I have done it with you. Any Questions to me.

Me: I asked about my feedback.

Interviewer: Sorry. We can’t tell that now. After 2 weeks we will send your results.

Me: Thank you, sir.

Interviewer: Thank you 

Note: No questions about family background, tell me about yourself and projects.

After 20 days, I got results.

Verdict: Selected. I was literally cried after seeing that.

My Personal Notes arrow_drop_up
Recommended Articles
Page :