Fizz buzz is a group word game for children to teach them about division. Players take turns to count incrementally, replacing any number divisible by three with the word "fizz", and any number divisible by five with the word "buzz".
Players generally sit in a circle. The player designated to go first says the number "1", and each player thenceforth counts one number in turn. However, any number divisible by three is replaced by the word fizz and any divisible by five by the word buzz. Numbers divisible by both become fizz buzz. A player who hesitates or makes a mistake is eliminated from the game.
For example, a typical round of fizz buzz would start as follows:
1, 2, Fizz, 4, Buzz, Fizz, 7, 8, Fizz, Buzz, 11, Fizz, 13, 14, Fizz Buzz, 16, 17, Fizz, 19, Buzz, Fizz, 22, 23, Fizz, Buzz, 26, Fizz, 28, 29, Fizz Buzz, 31, 32, Fizz, 34, Buzz, Fizz, ...
Fizz buzz (often spelled "FizzBuzz" in this context) has been used as an interview screening device for computer programmers. Writing a program to output the first 100 FizzBuzz numbers is a trivial problem for any would-be computer programmer, so interviewers can easily sort out those with insufficient programming ability.
- Rees, Janet (2002). Fizz Buzz: 101 Spoken Numeracy Games – Ideal for Mental Maths. Learning Development Aids. ISBN 978-1855033528.
- Imran Ghory (2007-01-24). "Using FizzBuzz to Find Developers who Grok Coding." Imran On Tech (blog).
- Jeff Atwood (2007-02-26). "Why Can't Programmers.. Program?" Coding Horror (blog).