Class reflections

- CS21A: Dr. Sarmenta did the worm thingy for control. I need to find

a better way to explain that, as it seemed to have gone over most people's heads. My class had fun with the while loop exercises, though.

- CS110: More deque implementation. People are doing surprisingly

well, even those who weren't really paying attention in class.

- CS139.3: I think I just got up there and babbled. Must fix.