Linked Lists class Link: empty = () definit_(self, first, rest=empty): assert rest is Link.empty or isinstance(rest, Link) self.first = first self.rest=rest Linked Lists: Write a recursive function flip_two that takes as input a linked list Ink and mutates Ink so that every pair is flipped. def flip_two(lnk): BEB >>> one_lnk= Link (1) >>> flip_two (one_lnk) >>> #one_lnk should look like: Link (1) >>> Ink = Link (1, Link (2, Link(3, Link (4, Link (5))))) >>> flip_two(lnk) >>> #Ink should look like: Link (2, Link (1, BHO Link (4, Link (3, Link (5)))))

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Python question

Linked Lists
class Link:
empty = ()
def
1
init__(self, first, rest-empty):
assert rest is Link.empty or isinstance(rest, Link)
Linked Lists: Write a recursive function flip_two that takes as input a linked list Ink and mutates Ink so that every pair is flipped.
self.first = first
self.rest = rest
def flip_two(lnk):
nun
>>> one_lnk Link(1)
>>> flip_two (one_lnk)
>>> #one_Ink should look like: Link (1)
>>> Ink = Link(1, Link(2, Link (3, Link (4, Link(5)))))
>>> flip_two(lnk)
>>> #Ink should look like: Link (2, Link(1, Link(4, Link (3, Link (5)))))
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End
Transcribed Image Text:Linked Lists class Link: empty = () def 1 init__(self, first, rest-empty): assert rest is Link.empty or isinstance(rest, Link) Linked Lists: Write a recursive function flip_two that takes as input a linked list Ink and mutates Ink so that every pair is flipped. self.first = first self.rest = rest def flip_two(lnk): nun >>> one_lnk Link(1) >>> flip_two (one_lnk) >>> #one_Ink should look like: Link (1) >>> Ink = Link(1, Link(2, Link (3, Link (4, Link(5))))) >>> flip_two(lnk) >>> #Ink should look like: Link (2, Link(1, Link(4, Link (3, Link (5))))) 11 11 11 @ 2 3 $ 4 D 1 1 1974 197 F4 ve d well done but 2012 PETENZION % 5 elemen mentale Chistes envel Mary A ATETORA Kame Bran REALIKE ATT INTERAZ esame me k 6 F7 & 7 Prisen FB 8 Home End
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