Class: Lista

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/Ein/p7.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Lista

Returns a new instance of Lista.



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# File 'lib/Ein/p7.rb', line 7

def initialize
    
   @head = nil
   @tail = nil
    
end

Instance Attribute Details

#head ⇒ Object

Returns the value of attribute head.



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# File 'lib/Ein/p7.rb', line 4

def head
  @head
end

#tail ⇒ Object

Returns the value of attribute tail.



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# File 'lib/Ein/p7.rb', line 4

def tail
  @tail
end

Instance Method Details

#clasificar_lista_sal ⇒ Object 



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# File 'lib/Ein/p7.rb', line 74

def clasificar_lista_sal

   while(empty? != true) do
        puts get_tail.value.clasificar_sal
        
   end
   true
end

#each ⇒ Object 



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# File 'lib/Ein/p7.rb', line 84

def each
    
   it = @head
   
   while it != nil
   
       yield it.value
       it = it.next
   end


end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/Ein/p7.rb', line 67

def empty?
    
    @head == nil
    @tail == nil

end

#get_head ⇒ Object 



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# File 'lib/Ein/p7.rb', line 47

def get_head

    aux = @head
    @head = @head.next
    #@head.prev = nil
    #aux.next = nil
    aux
    

end

#get_tail ⇒ Object 



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# File 'lib/Ein/p7.rb', line 58

def get_tail

    aux = @tail
    @tail = @tail.prev
   # @tail.next = nil
#    aux.prev = nil
    aux
end

#set_head(value) ⇒ Object 



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# File 'lib/Ein/p7.rb', line 14

def set_head(value)
   nodo = Node.new(value, nil, nil)
   
   if(@head== nil)
       @head = nodo
       @tail = nodo
           
   else
    
    @head.prev = nodo
    nodo.next = @head
    @head = nodo
   end
   
   
    
end

#set_tail(value) ⇒ Object 



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# File 'lib/Ein/p7.rb', line 32

def set_tail(value)
    nodo = Node.new(value, nil, nil)
    
    if(@tail == nil)
        @head = nodo
        @tail = nodo
    else
        
        @tail.next = nodo
        nodo.prev = @tail
        @tail = nodo
    end

end