def get_first_element(array)
  'BATATA'
end

def get_last_element(array)
  'BATATA'
end

def get_first_n_elements(array, n)
  'BATATA'
end

def add_element_to_end_of_array(array, element)
  'BATATA'
end

def filter_array_by_numbers_bigger_than_n(array, n)
  'BATATA'
end

def multiple_each_array_number_by_n(array, n)
  'BATATA'
end

def remove_duplicated_from_array(array)
  'BATATA'
end
