mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-27 15:01:08 +00:00
dd3b499bfa
* Rename is_palindrome.py to is_int_palindrome.py
* updating DIRECTORY.md
---------
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
35 lines
689 B
Python
35 lines
689 B
Python
def is_int_palindrome(num: int) -> bool:
|
|
"""
|
|
Returns whether `num` is a palindrome or not
|
|
(see for reference https://en.wikipedia.org/wiki/Palindromic_number).
|
|
|
|
>>> is_int_palindrome(-121)
|
|
False
|
|
>>> is_int_palindrome(0)
|
|
True
|
|
>>> is_int_palindrome(10)
|
|
False
|
|
>>> is_int_palindrome(11)
|
|
True
|
|
>>> is_int_palindrome(101)
|
|
True
|
|
>>> is_int_palindrome(120)
|
|
False
|
|
"""
|
|
if num < 0:
|
|
return False
|
|
|
|
num_copy: int = num
|
|
rev_num: int = 0
|
|
while num > 0:
|
|
rev_num = rev_num * 10 + (num % 10)
|
|
num //= 10
|
|
|
|
return num_copy == rev_num
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import doctest
|
|
|
|
doctest.testmod()
|