SOLVE FOR store_digits GIVEN A CLASS LINK BELOW:

def store_digits(n): """Stores the digits of a positive number n in a linked list.

>>> s = store_digits(1) >>> s Link(1) >>> store_digits(2345) Link(2, Link(3, Link(4, Link(5)))) >>> store_digits(876) Link(8, Link(7, Link(6))) """

class Link: """A linked list.

>>> s = Link(1) >>> s.first 1 >>> s.rest is Link.empty True >>> s = Link(2, Link(3, Link(4))) >>> s.second 3 >>> s.first = 5 >>> s.second = 6 >>> s.rest.rest = Link.empty >>> s # Returns repr(s) Link(5, Link(6)) >>> s.rest = Link(7, Link(Link(8, Link(9)))) >>> s Link(5, Link(7, Link(Link(8, Link(9))))) >>> print(s) # Prints str(s) <5 7 <8 9>> """ empty = ()

def __init__(self, first, rest=empty): assert rest is Link.empty or isinstance(rest, Link) self.first = first self.rest = rest

@property def second(self): return self.rest.first

@second.setter def second(self, value): self.rest.first = value

def __repr__(self): if self.rest: rest_str = ', ' + repr(self.rest) else: rest_str = '' return 'Link({0}{1})'.format(repr(self.first), rest_str)

def __str__(self): """Returns a human-readable string representation of the Link

>>> s = Link(1, Link(2, Link(3, Link(4)))) >>> str(s) '<1 2 3 4>' >>> str(Link(1)) '<1>' >>> str(Link.empty) # empty tuple '()' """ string = '<' while self.rest is not Link.empty: string += str(self.first) + ' ' self = self.rest return string + str(self.first) + '>'