def test_size(self):
"""Test size method."""
d = Dequeue()
self.assertEqual(d.size(), 0)
n = 10
for number in range(1, n):
d.add_rear(1)
self.assertEqual(d.size(), number)
def test_size(self):
d = Dequeue()
self.assertEqual(d.size(), 0)
d.add_front("apple")
self.assertEqual(d.size(), 1)
d.add_front("banana")
self.assertEqual(d.size(), 2)
d.add_front("cherry")
self.assertEqual(d.size(), 3)
def balanced_parentheses(s):
deq = Dequeue()
for c in s:
deq.pushBack(c)
if b(deq.peekFront()) != b(deq.peekBack()):
return False
while deq.size() > 0:
front = deq.popFront()
while b(front) != b(deq.peekBack()) and deq.peekBack() != None:
back = deq.popBack()
back = deq.popBack()
return deq.size() == 0 and b(front) == b(back)
def check_palindrome(text):
D = Dequeue()
for i in text:
D.addBack(i)
while D.size() > 1:
if D.removeBack() == D.removeFront():
return False
return True
def check_palindrome(text):
D = Dequeue()
for i in text:
D.addBack(i)
while D.size() > 1:
if D.removeBack() == D.removeFront():
return False
return True
def PalindromeDetector(string):
dq = Dequeue()
for letter in string:
dq.add_rear(letter)
while dq.size() > 1:
if dq.remove_front() != dq.remove_rear():
return False
return True
def palChecker(word):
dq = Dequeue()
for char in word:
dq.addRear(char)
while dq.size() > 1:
if dq.removeFront() != dq.removeRear():
return False
return True
def palchecker(str):
d = Dequeue()
for ch in str:
d.addRear(ch)
for _ in range(int(d.size() / 2)):
if (d.removeFront() != d.removeRear()):
return False
return True
def check_palindrome(string_to_check):
dq = Dequeue()
dq.set_items(string_to_check)
is_palindrome = True
while dq.size() > 1:
if dq.remove_front() != dq.remove_rear():
is_palindrome = False
return is_palindrome
def palin_check(string):
d=Dequeue()
for ch in string:
d.addRear(ch)
equals=True
while d.size()>1 and equals:
if d.removeFront() is d.removeRear():
pass
else:
equals=False
return equals
def checkPalindrome(input_string):
dequeue = Dequeue()
for character in input_string:
dequeue.addRear(character)
stillEqual = True
while (dequeue.size() > 1 and stillEqual):
first = dequeue.delFront()
last = dequeue.delRear()
if first != last:
stillEqual = False
return stillEqual
def check_palindrome(string_to_check):
sanitised_string = re.sub("[^a-zA-Z]","", string_to_check).lower()
dq = Dequeue()
dq.set_items(sanitised_string)
is_palindrome = True
while dq.size() > 1:
if dq.remove_front() != dq.remove_rear():
is_palindrome = False
return is_palindrome
class PalindromeChecker:
def __init__(self):
self.dq = Dequeue()
def check_if_palindrome(self, word):
self.dq.items = list(word)
is_palindrome = True
while self.dq.size() > 1:
first_letter = self.dq.remove_front()
last_letter = self.dq.remove_rear()
if first_letter != last_letter:
is_palindrome = False
return is_palindrome
def palindromeChecker(str):
charDequeue = Dequeue()
for ch in str:
charDequeue.addRear(ch)
stillEqual = True
while charDequeue.size() > 1 and stillEqual:
first = charDequeue.removeFront()
second = charDequeue.removeRear()
if first != second:
stillEqual = False
return stillEqual
def pal_checker(mystr):
"""检查字符串是否为回文字符串，即正序等于逆序字符串"""
dq = Dequeue()
mylist = [i for i in mystr]
indicator = True
for item in mylist:
dq.addRear(item)
for i in range(dq.size() // 2):
fornt = dq.removeFront()
rear = dq.removeRear()
if fornt != rear:
indicator = False
break
return indicator
def pal_checker(word):
chardequeue = Dequeue()
for char in word:
chardequeue.add_rear(char)
still_equal = True
while chardequeue.size() > 1 and still_equal:
first = chardequeue.remove_front()
last = chardequeue.remove_rear()
if first != last:
still_equal = False
return still_equal
