Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Please answer question 4.2 the reference question is also given.
Please explain how to get the answer with the answer.
If can please give answer and explaining as two parts.
Thank you.
Transcribed Image Text:Question 4.2
What is the output of the following code, assuming the queue is initially empty? You can assume the
code for the queue is as shown in Question 4.1.
q = Queue ()
print (q.is_empty())
q. enqueue ('orange')
print (q.is_empty())
q. enqueue ('apple')
q. enqueue ('pear')||
print (q.peek () )
q. dequeue ()
print (q.size () )
q. enqueue ('nectarine')
q. enqueue (7)
q. enqueue (3)
print (q.peek ())
print (q.dequeue ())
q.size ()
print (q.dequeue ())
![Section 4 - Queues
Question 4.1
Complete the following table to show the return value and contents of the queue after each function
call in the sequence, assuming the queue is initially empty. You can assume the code for the queue is
as shown below.
Queue contents (front of
queue shown on right)
Operation
Return value
q = Queue()
q.enqueue(2)
q.enqueue(4)
q.enqueue(6)
q.dequeue()
q.enqueue(5)
q.peek()
q.size()
q.dequeue()
q.dequeue()
q.is_empty()
q.enqueue(7)
q.enqueue(10)
q.size()
q.dequeue()
q.dequeue()
q.peek()
q.dequeue()
q.is_empty()
q.enqueue(12)
%3D
none
[2]
none
class Queue:
def
init
(self):
self.items = []
def is empty (self):
return self.items
def size (self):
return len (self.items)
def peek (self):
return self.items[len(self.items) - 1]
def enqueue (self, item) :
self.items.insert (0, item)
def dequeue (self):
return self.items.pop()
[]
LO](https://content.bartleby.com/qna-images/question/2ed0c43e-c799-4452-ac1c-ddbc7a6dbec0/4999f96e-fe3a-41e8-bfc0-c16c89eb47bf/c4b2esuv_processed.jpeg)
Transcribed Image Text:Section 4 - Queues
Question 4.1
Complete the following table to show the return value and contents of the queue after each function
call in the sequence, assuming the queue is initially empty. You can assume the code for the queue is
as shown below.
Queue contents (front of
queue shown on right)
Operation
Return value
q = Queue()
q.enqueue(2)
q.enqueue(4)
q.enqueue(6)
q.dequeue()
q.enqueue(5)
q.peek()
q.size()
q.dequeue()
q.dequeue()
q.is_empty()
q.enqueue(7)
q.enqueue(10)
q.size()
q.dequeue()
q.dequeue()
q.peek()
q.dequeue()
q.is_empty()
q.enqueue(12)
%3D
none
[2]
none
class Queue:
def
init
(self):
self.items = []
def is empty (self):
return self.items
def size (self):
return len (self.items)
def peek (self):
return self.items[len(self.items) - 1]
def enqueue (self, item) :
self.items.insert (0, item)
def dequeue (self):
return self.items.pop()
[]
LO
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