HPE visited our college for on-campus placements. The interview process followed a standard format. It consisted of three rounds:

• The Technical round
• The Managerial + Technical round
• The HR round

Coding Questions

1. Write code for Merge Sort (pseudo code).
2. How to find whether a loop is present or not in a Linked List.
3. Detect the point where a loop exists in a Linked List and remove the loop.
4. Reverse a Linked List.
5. Flatten a binary tree into a Linked List.
6. What is a condition for a tree to be a BST (Theoretical).

Fundamentals and Logic Building Questions

1. What is the OSI Layer?
2. Which data structure can be used to implement Left arrow and Right arrow buttons on a web browser?
3. What is Cache memory, and where do we use it?
4. Difference between CPU and GPU.
5. What are Encryption and Decryption, and explain the Private key and public key concept?