Class: Lista

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/nodelist/list.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Lista

Returns a new instance of Lista.



6
7
8
9
 
# File 'lib/nodelist/list.rb', line 6

def initialize()
  @head = nil
  @lastnext = nil
end

Instance Attribute Details

#head ⇒ Object

Returns the value of attribute head.



5
6
7
 
# File 'lib/nodelist/list.rb', line 5

def head
  @head
end

#lastnext ⇒ Object

Returns the value of attribute lastnext.



5
6
7
 
# File 'lib/nodelist/list.rb', line 5

def lastnext
  @lastnext
end

#puntero ⇒ Object

Returns the value of attribute puntero.



5
6
7
 
# File 'lib/nodelist/list.rb', line 5

def puntero
  @puntero
end

Instance Method Details

#add(*args) ⇒ Object 



39
40
41
42
43
44
45
46
47
48
49
50
51
 
# File 'lib/nodelist/list.rb', line 39

def add(*args)
  args.each do |value|
    if @head == nil then
      @head = Node.new(value, nil, nil)
      @lastnext = @head
    else
      last = Node.new(value, nil, @lastnext)
      last.father = @lastnext
      @lastnext.next = last
      @lastnext = last
    end
  end
end

#add_s(value) ⇒ Object 



28
29
30
31
32
33
34
35
36
37
38
 
# File 'lib/nodelist/list.rb', line 28

def add_s(value) 
    if @head == nil then
      @head = Node.new(value, nil, nil)
      @lastnext = @head
    else
      last = Node.new(value, nil, @lastnext)
      last.father = @lastnext
      @lastnext.next = last
      @lastnext = last
    end
end

#each ⇒ Object 



10
11
12
13
14
15
16
 
# File 'lib/nodelist/list.rb', line 10

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

#first ⇒ Object 



52
53
54
55
56
57
58
59
60
 
# File 'lib/nodelist/list.rb', line 52

def first
  if @head != nil then
    aux = @head.value
    @head = @head.next
    return aux
  else
    return -1
  end
end

#reverse ⇒ Object 



21
22
23
24
25
26
27
 
# File 'lib/nodelist/list.rb', line 21

def reverse
  list = Array.new
  @head.reverse{|x| list.push(x.value)}
  @head = nil
  @lastnext = nil
  list.each{|x| self.add(x)}
end

#reverse_each ⇒ Object 



17
18
19
 
# File 'lib/nodelist/list.rb', line 17

def reverse_each
    @head.each {yield @lastnext.value; @lastnext=@lastnext.father} if @lastnext != nil
end

#to_a ⇒ Object 



64
65
66
67
68
69
70
71
72
73
 
# File 'lib/nodelist/list.rb', line 64

def to_a
  a_value = Array.new
  pointer = @head
  while pointer.next != nil do
    a_value.push(pointer.value)
    pointer = pointer.next
  end
  a_value.push(pointer.value)
  a_value.to_s
end

#to_s ⇒ Object 



61
62
63
 
# File 'lib/nodelist/list.rb', line 61

def to_s
  "#{@head}"
end