input: Write a python function to retrieve a sorted list of elements from a specified list of positive integers, ensuring that none of the elements contain an even digit.
  assert unique_digits([15, 33, 1422, 1]) == [1, 15, 33]
  assert unique_digits([152, 323, 1422, 10]) == []
  assert unique_digits([12345, 2033, 111, 151]) == [111, 151]
  assert unique_digits([135, 103, 31]) == [31, 135]
output: def unique_digits(numbers):
      def has_no_even_digit(n):
          return all(int(digit) % 2 != 0 for digit in str(n))
      
      return sorted(filter(has_no_even_digit, numbers))