Discover the answers you need at Westonci.ca, where experts provide clear and concise information on various topics. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.
Sagot :
Answer:
#Implementation of Queue class
class Queue
#Implementation of _init_
def _init_(self, limit=10):
#calculate the self.data
self.data = [None] * limit
self.head = -1
self.tail = -1
#Implementation of enqueue function
def enqueue(self, val):
#check self.head - self.tail is equal to 1
if self.head - self.tail == 1:
raise NotImplementedError
#check len(self.data) - 1 is equal to elf.tail
if len(self.data) - 1 == self.tail and self.head == 0:
raise NotImplementedError
#check self.head is equal to -1
if self.head == -1 and self.tail == -1:
self.data[0] = val
self.head = 0
self.tail = 0
else:
#check len(self.data) - 1 is equal to self.tail
if len(self.data) - 1 == self.tail and self.head != 0:
self.tail = -1
self.data[self.tail + 1] = val
#increment the self.tail value
self.tail = self.tail + 1
#Implementation of dequeue method
def dequeue(self):
#check self.head is equal to self.tail
if self.head == self.tail:
temp = self.head
self.head = -1
self.tail = -1
return self.data[temp]
#check self.head is equal to -1
if self.head == -1 and self.tail == -1:
#raise NotImplementedError
raise NotImplementedError
#check self.head is not equal to len(self.data)
if self.head != len(self.data):
result = self.data[self.head]
self.data[self.head] = None
self.head = self.head + 1
else:
# resetting head value
self.head = 0
result = self.data[self.head]
self.data[self.head] = None
self.head = self.head + 1
return result
#Implementation of resize method
def resize(self, newsize):
#check len(self.data) is less than newsize
assert (len(self.data) < newsize)
newdata = [None] * newsize
head = self.head
current = self.data[head]
countValue = 0
#Iterate the loop
while current != None:
newdata[countValue] = current
countValue += 1
#check countValue is not equal to 0
if countValue != 0 and head == self.tail:
break
#check head is not equal to
#len(self.data) - 1
if head != len(self.data) - 1:
head = head + 1
current = self.data[head]
else:
head = 0
current = self.data[head]
self.data = newdata
self.head = 0
self.tail = countValue - 1
#Implementation of empty method
def empty(self):
#check self.head is equal to -1
# and self.tail is equal to -1
if self.head == -1 and self.tail == -1:
return True
return False
#Implementation of _bool_() method
def _bool_(self):
return not self.empty()
#Implementation of _str_() method
def _str_(self):
if not (self):
return ''
return ', '.join(str(x) for x in self)
#Implementation of _repr_ method
def _repr_(self):
return str(self)
#Implementation of _iter_ method
def _iter_(self):
head = self.head
current = self.data[head]
countValue = 0
#Iterate the loop
while current != None:
yield current
countValue += 1
#check countValue is not equal to zero
#check head is equal to self.tail
if countValue != 0 and head == self.tail:
break
#check head is not equal to len(self.data) - 1
if head != len(self.data) - 1:
head = head + 1
current = self.data[head]
else:
head = 0
current = self.data[head
Explanation:-
Output:
We appreciate your time on our site. Don't hesitate to return whenever you have more questions or need further clarification. Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.
