Microsoft Software Developer Internship interview questions

We had three rounds. The first one comprised of questions on dynamic programming and was conducted on an online platform. The next one was that of DSA implementation where I was asked questions on binary trees and graphs of medium difficulty. The last round was the HR round where I had to dive deep into one of my projects based on NLP.

General c++ fundamentals, byte stream serialization of a linked list data structure, Design a custom ad-picker given an array of probabilities of each add occurring.