APT Research interview questions

The OA was not your typical LeetCode-style OA :) it's a nice design interview to test your ability to write good code. As for the interview, I had 3 rounds (around 1 hour each), and I was asked about things from my resume, OS and Networks in depth as well as C++ STL in depth in all three of them. There were a couple of DSA questions asked as well.

Coding round (Leetcode medium Hard) 3 Interview Rounds ( Options : Completely based on Sheldon Natenberg book (specific chapters) , DSA, Brainteasers, puzzles) Interviewers are expecting good knowledge of python/cpp coding language, solved Brainteasers book completely (red and green book of quants) and decent DSA skills (Leetcode hard)