circular_linked

Circular Linked List

Implementation for the circular linked list data structure for Ruby.

List is composed by nodes, which have each one a value and a next item.

Installation

Just add to your Gemfile:

gem "circular_linked"

Then

$ bundle install

Or you can install the gem directly from terminal:

$ gem install circular_linked

Usage

items_list = CircularLinked::List.new(1, 2, 3)
empty_list = CircularLinked::List.new

items_list.head #=> #<Node:0x... @value=1 ...
empty_list.head #=> nil

items_list.add(4) # List now have nodes with the values: 1, 2, 3, 4

items_list.last_node #=> 4
empty_list.last_node #=> nil

items_list.find(2) #=> #<Node:0x... @value=2 ...
empty_list.find(2) #=> nil

items_list.remove(3) # List now have nodes with the values: 1, 2, 4
empty_list.remove(3) # List remains empty

items_list.items_value #=> [1,2,4]
empty_list.items_value #=> []

items_list.length #=> 3
empty_list.length #=> 0

items_list.each {|node| puts node.value }
#=> 1
#=> 2
#=> 4
empty_list.each {|node| puts node.value }
#=>

Development

Just run bundle install to install the dependencies and you are ready.

Tests

To run the specs, after installing the dependecies as said above, you can just run in the main folder:

$ rspec .

Contributing

Feel free to open pull requests/issues or to fork this repo.