Give a single line "C type" expression to evaluate (-1)^k using only +,-,* and % operators.

(In reply to Whole numbers? by Erik O.)

I think Dej Mar's complaint would be valid, but it's clear that no such expression would exist for most values of k (the ones where the answer is imaginary).

Furthermore, even fractions such as 5/2 would get out of the range of a D1 question, so I think it's unlikely that a more complex answer was desired than what was previously given.

Posted by Gamer on 2008-01-28 13:46:14