Class: Algorithmable::DataStructs::LinkedList

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/algorithmable/data_structs/linked_list.rb

Defined Under Namespace

Classes: Node

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LinkedList

Returns a new instance of LinkedList.



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# File 'lib/algorithmable/data_structs/linked_list.rb', line 7

def initialize
  @head = nil
  @tail = nil
  @length = 0
  @op_counter = 0
end

Instance Attribute Details

#length ⇒ Object (readonly)

Returns the value of attribute length.



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# File 'lib/algorithmable/data_structs/linked_list.rb', line 5

def length
  @length
end

Instance Method Details

#each(&block) ⇒ Object 



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# File 'lib/algorithmable/data_structs/linked_list.rb', line 30

def each(&block)
  next_node = @head
  nodes = []
  while next_node
    nodes << next_node
    next_node = next_node.succ
  end
  nodes.each(&block)
end

#first ⇒ Object 



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# File 'lib/algorithmable/data_structs/linked_list.rb', line 22

def first
  @head ? @head.dup : fail_index_error
end

#last ⇒ Object 



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# File 'lib/algorithmable/data_structs/linked_list.rb', line 26

def last
  @tail ? @tail.dup : fail_index_error
end

#push(data) ⇒ Object 



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# File 'lib/algorithmable/data_structs/linked_list.rb', line 18

def push(data)
  link_tail_node data
end

#unshift(data) ⇒ Object 



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# File 'lib/algorithmable/data_structs/linked_list.rb', line 14

def unshift(data)
  link_head_node data
end