Stack

class Stack:
  def __init__(self,size = 100):
  #@param self: int
    self.stack = []
    self.size = size

  def push(self,element):
  #@param element: qualsiasi tipo
    if len(self.stack)<=self.size:
      self.stack.append(element)
    else:
      print('Raggiunto limite di memoria')

  def pop(self):
    self.stack = self.stack[:-1]

  def top(self):
  #@return: qualsiasi tipo
    if self.stack != []:
      return self.stack[-1]

  def empty(self):
  #@return: bool
    return not self.stack