The second pointer going twice the speed? I don't know the story, but I know the solution, because I've seen it.
Similarly for many other tricks.
I have never used it in real-life development, though.
Similarly for many other tricks.
I have never used it in real-life development, though.
> I have never used it in real-life development, though.
I'd wager both of these are true for the majority of technical interview problems, and I think that's exactly the point.