Instructure Senior Software Engineer interview questions

There were four phases: screening from the internal recruiter, a meeting with the two managers of the group, and two technical interviews (one for each team of devs). The recruiter accused me of not reading the job spec when I asked a simple question and then doubled back when I asked him for more details about something else. There were two managers: both seemed fine. The technical interviews were just a series of coding challenges that I solved in front of them while they asked questions. At one point, I noticed a dev had a weird zoom background about bugs and system errors. So, I asked him about it. The QA team had created it for him. He didn't seem happy about it. I received a good offer, but the contract had an overly-broad property assignment clause. Basically, everything I do on or off the clock gets assigned to them. The clause acknowledges that this is illegal in some states and makes exceptions for states where it's illegal. You can see what I'm talking about by reading the CEO's employment agreement, which is publicly available. It's more or less the same one they gave me. I found a lawyer to suggest some minor changes, and the recruiter came back asking me who I thought I was and saying that nobody else had a problem with this. I'd heard enough and turned down the offer.

Applied on their website, was contacted by their recruiter within 1 week. Had a phone interview then was pushed to an OA. I received an OA assessment. This assessment consisted of basic CSS, JavaScript, and basic engineering multiple choice questions. Afterwards, I was given Evaluate Reverse Polish Notation. Beware that Hackerrank maes you read from STDIN for this OA, because of this I went ahead and coded my solution with Python although I normally code in C++. I passed the Online Assessment, and was contacted by the recruiter the very next day. We then scheduled a Phone Screen. The Phone Screen was done with a team lead, that was a bit on the weaker side technically, i suppose I had high expectations from a basic web dev to understand C++. The interview itself was a number of basic engineering questions, think Web 101. I was then given a Hackerrank console and told to solve. I solved the question without hints, but was somehow rejected without feedback. I posted the question and the solution below. I have 2 oncoming FAANG onsite loops so it was unusual that this happened even though i solved everything they gave me, my solutions were optimal and done without any type of hints. Perhaps I did not pass some hidden requirements? I have received no feedback which is unfortunate, but seems to be the norm in this industry. This was just a training interview for me as I have FAANG onsite loops incoming, and never really considered them, i pushed them on for weeks before taking any of their interviews. This being said i would have liked to see their onsite and do those problems, love me some free mock interviews!