Ruby元编程：如何通过和类变量定义的instite构造函数打印局部变量

我正在学习元编程，并试图解决这里给出的难题

我无法打印33和3。 有人能帮我打印这个吗？

请检查一下要点：

class A
  def initialize
    @a = 11
    @@a = 22
    a = 33
  end
  @a = 1
  @@a = 2
  a = 3
end

Given the above class i have to print below ouptput

1
2
3
11
22
33

$results = []

$results << class A
  def initialize
    @a = 11
    @@a = 22
    a = 33
  end
  @a = 1
  @@a = 2
  a = 3
end

$results << A.instance_variable_get(:@a)
$results << A.class_variable_get(:@@a)

puts $results.sort!

# 1
# 2
# 3

class B < A
  def initialize
    $results << super
  end
end


A.new
# define class A and get the instance variable 11 from the initialize method
$results <<  A.new.instance_variable_get(:@a)
# define class A and get the instance variable 22 from the initialize method
$results <<  A.class_variable_get(:@@a)

# here class B inherits from class A and use the `super` to call the `initialize` method of the parent class A, 
# this way you can retrieve the instance variable `a = 33` from the initialize method on Class A.
B.new

puts $results.sort!

# 1
# 2
# 3
# 11
# 22
# 33