Four video interviews, each an hour long, took place over one afternoon. It was possibly the worst interview experience I've ever had.

My first interviewer failed to show up, so I had to reschedule.

One interviewer asked me the exact same questions as the two interviewers before. I'd suggest communicating and agreeing on questions beforehand.

One interviewer was very lovely, but the rest were extremely unhelpful and were textbook examples of "out to get you" interviewers.

Implement the most basic trading algorithm on an array of prices. Calculate maximum profit with any number of trades allowed, and when only one buy and sell is allowed.

Given an array of heights representing hills, find the max area of water that would fill the valleys.

How do you build a trading order book efficiently?