Capital One

First, there was a very persistent call with the recruiter about your work methods and knowledge. Then, it was a HackerRank-style test. And finally, the 3-hour interview.

Code signal with 4 questions. Questions 1, 2, and 4 were moderate; question 3 was the hardest. I believe you need to score above a certain threshold to be considered for the next round. I scored in the 600s.

They had their own in-house question, but the goal is to use a nested hashmap to solve the answer. Pretty straightforward and simple, but there's 4 different parts to it.