Class: Lista

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/alu0100987522/lista.rb,
lib/alu0100987522/version.rb

Defined Under Namespace

Classes: Node

Constant Summary collapse

VERSION = 
"0.1.0"

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#head ⇒ Object (readonly)

Returns the value of attribute head.



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# File 'lib/alu0100987522/lista.rb', line 5

def head
  @head
end

#tail ⇒ Object (readonly)

Returns the value of attribute tail.



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# File 'lib/alu0100987522/lista.rb', line 5

def tail
  @tail
end

Instance Method Details

#clasificar ⇒ Object 



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# File 'lib/alu0100987522/lista.rb', line 68

def clasificar
    if(@head.value.sal >= 5)
        return true
    else 
        return false
    end
end

#each ⇒ Object 



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# File 'lib/alu0100987522/lista.rb', line 86

def each 
    x = @tail
    while(x != nil)
        yield x.value
        x = x.next
    end
end

#pop_head ⇒ Object 



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# File 'lib/alu0100987522/lista.rb', line 34

def pop_head()
    
    if(@head == nil)
        return nil
    else
        aux = @head.value
        if(@head == @tail)
            @head = @head.prev
            @head, @tail = nil
        else
            @head = @head.prev
            @head.next = nil
        end
        return aux
    end
end

#pop_tail ⇒ Object 



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# File 'lib/alu0100987522/lista.rb', line 51

def pop_tail()
    
    if(@tail == nil)
        return nil
    else
        aux = @tail.value
        if(@head == @tail)
            @tail = @tail.next
            @head, @tail = nil
        else
            @tail = @tail.next
            @tail.prev = nil
        end
        return aux
    end
end

#push_head(value) ⇒ Object 



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# File 'lib/alu0100987522/lista.rb', line 9

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

#push_tail(value) ⇒ Object 



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# File 'lib/alu0100987522/lista.rb', line 22

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

#to_s ⇒ Object 



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# File 'lib/alu0100987522/lista.rb', line 76

def to_s
    str = @tail.value.to_s()
    aux = @tail.next
    while(aux)
        str << aux.value.to_s()
        aux = aux.next
    end
    return str
end