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 ())
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 ())
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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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.
Operation
Return value
Queue contents (front of
queue shown on right)
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)
none
none
[2]
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 ()
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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.
Operation
Return value
Queue contents (front of
queue shown on right)
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)
none
none
[2]
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 ()
[)
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