Fizzbuzz

Brief:

Fizzbuzz is a group word game for children to teach them about division/game to enable university students to get drunk. Players take turns to count incrementally, replacing any number divisible by three with the word "fizz", any number divisible by five with the word "buzz", and any number divisible by both three and five with the word "fizzbuzz".

1, 2, Fizz, 4, Buzz, Fizz, 7, 8, Fizz, Buzz, 11, Fizz, 13, 14, Fizzbuzz, 16, 17, Fizz, 19, Buzz, Fizz, 22, 23, Fizz, Buzz, 26, Fizz, 28, 29, Fizzbuzz, 31, 32, Fizz, 34, Buzz, Fizz, ...

Technologies used:

Ruby
RSpec (Behaviour Driven Development for Ruby)

Testing setup:

$ rspec --init (will install rspec, create .rspec file and spec folder (containing spec_helper.rb file))
Add line --format documentation to .rspec file so appears as below:

--color
--format documentation
--require spec_helper

Replicate this folder directory:

      ├── lib
      │   └── fizzbuzz.rb
      └── spec
          └── fizzbuzz_spec.rb

Run tests from root: $ rspec
Or by specifically calling spec file in isolation (should you have many test files and only wish to run one): $ rspec ./spec/fizzbuzz_spec.rb

IRB (Interactive Ruby Shell):

$ irb
require './lib/fizzbuzz' => true
1.upto(100){ |number| puts fizzbuzz(number) } => prints outcome for each number of 1-100
(1..100).map{| number| fizzbuzz(number) } => create array
fizzes = _ => saves last created value to variable called 'fizzes'
fizzes.count => 100
fizzes.select{ |element| element == 'Fizz' }
fizzes.select{ |element| element == 'Fizz' }.count => number of times 'fizz' occurs (27)
fizzes.select{ |element| element == 'Buzz' }.count => number of times 'buzz' occurs (14)
fizzes.select{ |element| element == 'Fizzbuzz' }.count => number of times 'fizzbuzz' occurs (6)
quit

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