Unfurl takes a matrix (a two dimensional array) as input and returns a string. The matrix may be of arbitrary size and must consist of uppercase English letters. The returned string will consist of all elements of the matrix ordered in a clockwise spiral pattern starting with element [0, 0]. Each letter will be converted to lowercase and separated by a single whitespace character.
For example, given the following matrix:
A B C D
E F G H
I J K L
The resulting string would be: "a b c d h l k j i e f g"
Add this line to your application's Gemfile:
gem 'unfurl'
And then execute:
$ bundle
Or install it yourself as:
$ gem install unfurl
To use Unfurl:
require 'unfurl'
matrix = [['A', 'B'],
['C', 'D']]
Unfurl.new(matrix).process
# => "a b d c"
After checking out the repo, run bin/setup
to install dependencies. Then, run rake spec
to run the tests. You can also run bin/console
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/MSeneadza/unfurl. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The gem is available as open source under the terms of the MIT License.
Everyone interacting in the Unfurl project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.