60 Minute phone interview on hackerrank. Interviewer dove directly into programming questions that were vague and offered little explanation as to what he was looking for. Some of the questions didn't make sense and the interviewer didn't clarify anything. After the interview ended I got ghosted (no follow up at all). I found the whole experience to be very unprofessional.

Applied through a recruiting firm (who to their credit were quite efficient) First phone round went decently. Questions related to copy constructor and another algorithmic question. I thought my answer on the copy constructor wasn't upto the mark. Was elated when I got a call for a second phone interview Was much better prepared during this interview . Question 1 : Remove duplicate elements in a linked list Ans : Breezed through this as any developer worth his salt would Question 2 : Compare two binary trees and return if they are equal. Ans : Suggested a very acceptable solution where we traverse through the trees inorder and store them in vectors, and compare the vectors to check for equivalence. Was quizzed on that. Summary : Both programs were accurate solutions and the programs worked on Hackerrank without a hitch. However second one was probably not the 100% efficient result they were looking for. Result :REJECTED.