given an NxN integer array, rotate it 90 degrees in place without using any temporary storage (well, okay, you can have a pair of "for" loops. No more.)
(just a little tricky.)
"Aww man, that was *thunder*! It's gonna suck to bus home in *that*. Wait. The weather was completely wrong for rain. I could look outside, but it's dark, I might not be able to tell . . ."
"fair weather, 65% humidity . . ."
*thunder sounds again*
*takes headphones off*
*thunder stops midway through*