This is in the webpage of a professor at my university. His class was entertaining, and he is clearly really smart, but he scared off most of the students by as

This is in the webpage of a professor at my university. His class was entertaining, and he is clearly really smart, but he scared off most of the students by asking them questions about the material, and teaching only the minimum necessary. These problems are really cool, and seem to cover a lot of ground from silly list manipulation techniques to dynamic programming.