40 lines
1.0 KiB
Python
40 lines
1.0 KiB
Python
import string
|
|
import math
|
|
|
|
def isPalindrome(s):
|
|
"""
|
|
:type s: str
|
|
:rtype: bool
|
|
"""
|
|
# Create a translation table to remove uppercase letters and special characters
|
|
translation_table = str.maketrans("","", string.punctuation + string.whitespace)
|
|
|
|
# Use the translation table to remove uppercase letters and special characters
|
|
upper_string = s.translate(translation_table)
|
|
lower_string = upper_string.lower()
|
|
|
|
half = len(lower_string)/2
|
|
# Round the value down since middle value doesn't matter
|
|
halfdown = math.floor(half)
|
|
# print(halfup)
|
|
# print(halfdown)
|
|
first = []
|
|
second = []
|
|
# print(lower_string)
|
|
|
|
for i in range(halfdown):
|
|
# print(i)
|
|
# print(lower_string[i])
|
|
first.append(lower_string[i])
|
|
|
|
for j in range(halfdown+1, len(lower_string)):
|
|
second.insert(0, lower_string[j])
|
|
|
|
# print(first)
|
|
# print(second)
|
|
if first == second:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
print(isPalindrome("A man, a plan, a canal: Panama")) |