DataStructures101 
DataStructures101 is a simple gem that groups several implementations of common data structures usually taught in Computer Science courses. The overall goal of the gem is to provide easy to use functionality (trying to match the behavior of existent structures in Ruby) while providing the user with a framework to test and compare their implementations against.
Installation
Add this line to your application's Gemfile:
gem 'data_structures_101'
And then execute:
$ bundle
Or install it yourself as:
$ gem install data_structures_101
Usage
require 'data_structures_101'
LinkedList
To create a LinkedList
list = DataStructures101::LinkedList.new
For more information in the LinkedList class, check this post and read the documentation.
Contributing
In lieu of a formal styleguide, take care to maintain the existing coding style. Add specs for any new or changed functionality and tests it using RSpec.
Bug reports and pull requests are welcome on GitHub at https://github.com/renehernandez/data_structures_101.
License
The gem is available as open source under the terms of the MIT License.