Sha256: 08fcf4900cac67d64c0418c9dfbb932887f20842981937a91d04499a034ab352
Contents?: true
Size: 911 Bytes
Versions: 346
Compression:
Stored size: 911 Bytes
Contents
class Element
attr_reader :datum
attr_accessor :next
def initialize(value)
@datum = value
@next = nil
end
end
class SimpleLinkedList
def initialize(array = [])
create_from_array(array)
end
def to_a
result = []
pointer = @head
while pointer
result << pointer.datum
pointer = pointer.next
end
result
end
def push(element)
element.next = @head unless @head.nil?
@head = element
self
end
def pop
element = @head
@head = element.next if element
element
end
def reverse!
previous = nil
pointer = @head
while pointer
temp = pointer.next
pointer.next = previous
previous = pointer
pointer = temp
end
@head = previous
self
end
private
def create_from_array(array)
array.each { |value| push(Element.new(value)) }
end
end
module BookKeeping
VERSION = 1
end
Version data entries
346 entries across 346 versions & 1 rubygems