Throughout my time in college and university, I did have two teachers I would describe as "hard and not fair". The first was a second-year Physics teacher at m

Throughout my time in college and university, I did have two teachers I would describe as "hard and not fair". The first was a second-year Physics teacher at my community college. He said that at least 50% of the class should fail. Not 50% will fail, but that 50% should fail, and if less than 50% fails, the class was too easy. He demanded that we memorize 30+ equations that could appear on the final and did not allow a notecard of equations. The other was my Algorithms teacher in my third year, who basically wasn't teaching what we really needed to know, as far as I was concerned. I was expecting to learn breadth/depth-first searching, binary search, sorting algorithms, maybe even path-finding like A* and Dijkstra's, etc. Instead, the entire course was about algebra dealing with Big-O, Big-Theta, and Big-Omega, with only a slight nod to how they related to code.