Round 1: Written test with 2 questions
Question1: Given an array of size n containing both positive and negative numbers. Find the count of subarrays whose sum is 0.
Question2: Add next pointer to every node present at the same level.
Round 2: Data structures and Algorithm
First discussion on my approach and code for the written test problems
Question 1: https://www.geeksforgeeks.org/minimum-number-platforms-required-railwaybus-station/
Question 2: Given a chess board of size m*n. A knight is present at some initial position. Find the minimum number of moves so that it can move to some given final location.
Hint: Think BFS
Round 3: Algorithm, Design and OOPS concepts
Question 1: Design a tank game. https://www.youtube.com/watch?v=ms-MTSCF3mw
HLD and LLD with classes and functionalities. Design patters, abstract classes and interfaces
Question 2: A continuous stream of numbers is coming. Find the median at any given time. Algorithm and code
Hint: Lets say m is a median at any given time. Use a min heap of numbers more than m and a max heap of numbers less than m. Now retrieval is O(1) and insertion is O(log n)
Question 3: Design whatsapp. Just high level design
Question 4: How deployment works on multiple server machines. Concepts of AB testing and few other questions
Round 4: Algorithm, Design, multi threading, concurrency, database concepts
Question 1: Given a string of characters. You need to transform it to a given new string of same length in minimum cost where:
a) ‘b’ can be transform to ‘a’ or to ‘c’ with cost 1. Similarly for other characters.
b) any numbers of b’s can be transformed to c’s with cost 1 and also to a’s with cost 1.
Question 2: Given multiple bars of given heights and unit width. Find the rectangle with max area.
Question 3: Design a vending machine
Question 4: How will you choose which column to choose for indexing.
Question 5: Sharding in databases. How facebook would shard it users database
Questions on mulithreading, immutable class, concurrency
Round 5: Design, Previous experience and practical questions
Question 1: Explain any 1 project I enjoyed working on
Interviewer was not interested in my project and moved to a design question
Question 2: Design a traffic signal starting with all use cases, HLD, LLD
Question 3: Design an elevator system
My favorite design patterns and what patterns I would use in above questions
What I would look in design reviews and in code reviews and few other behavioral questions
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
- Flipkart Interview Experience | Set 46 (On-Campus for SDE-1)
- Samsung Interview Experience | Set 36 (On-Campus)
- OYO Interview Experience | Set 4 (For 5+ Experienced)
- Oracle Interview Experience | (Application Developer for 2.5 Years Experienced)
- Cognizant Interview Experience | Set 5 (On Campus for Associate)
- OneTrust- Software Developer Interview
- Sprinklr On Campus Internship
- FactSet On-Campus Interview Experience
- Arcesium Interview Experience (Internship)
- Cerner Interview Experience (Off-Campus) for the role of Software Engineer