perplexus.info :: Algorithms : Single Line Expression

Single Line Expression (Posted on 2008-01-27)

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

Submitted by Praneeth

Rating: 5.0000 (1 votes)

Solution: (Hide)

Apologies for not mentioning that k is an integer.
Answer:
(-1)^k=1-2*(k%2);

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Puzzle Solution	K Sengupta	2022-09-12 01:09:42
re(2): Whole numbers is reasonable assumption [Spoiler]	Dej Mar	2008-01-29 07:03:42
re: Whole numbers is reasonable assumption	Gamer	2008-01-28 13:46:14
Whole numbers?	Erik O.	2008-01-28 09:48:32
re: Solution	Dej Mar	2008-01-27 22:17:06
Solution	Kurious	2008-01-27 11:36:52

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