say you’re sitting in a boat in the middle of a pond. In the boat with you, there’s a big rock. You chuch the rock into the water and it sinks to the bottom. Does the surface level of the pond go up or down?
computer programming puzzle: say you have a string like “the cat is sitting on the wall” and using only one piece of temp storage, reverse the other of the words. In the previous example, you want “wall the on sitting is cat the”
another programming puzzle. say you have a ray from the origin to a point in the first quadrant (both x and y are positive). I give you another point. Is the point to the left or right of the line?