Lol. Show me someone who can solve these problems under interview conditions after taking a freshman algo course, without further practice and I will show you the greatest genius who has ever lived. Humans are not that smart. But they are tricky lying assholes who will pretend to have not practiced if it advances them.
This is literally practice. What part of my comment caused you confusion? (I cannot repress the snark, but you are performing some pretty intense mental gymnastics to support some internal emotional state)
