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My favorite palindrome (#7455)

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* My favorite palindrome

* updating DIRECTORY.md

* Update is_palindrome.py

* Update is_palindrome.py

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* Update strings/is_palindrome.py

Co-authored-by: Caeden Perelli-Harris <caedenperelliharris@gmail.com>

* Update is_palindrome.py

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Christian Clauss 2022-10-23 18:12:49 +02:00 committed by GitHub
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1 changed files with 9 additions and 10 deletions
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strings/is_palindrome.py
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@ -1,9 +1,8 @@
def is_palindrome(s: str) -> bool: def is_palindrome(s: str) -> bool:
""" """
Determine whether the string is palindrome Determine if the string s is a palindrome.
:param s:
:return: Boolean >>> is_palindrome("A man, A plan, A canal -- Panama!")
>>> is_palindrome("a man a plan a canal panama".replace(" ", ""))
True True
>>> is_palindrome("Hello") >>> is_palindrome("Hello")
False False
@ -14,15 +13,15 @@ def is_palindrome(s: str) -> bool:
>>> is_palindrome("Mr. Owl ate my metal worm?") >>> is_palindrome("Mr. Owl ate my metal worm?")
True True
""" """
# Since Punctuation, capitalization, and spaces are usually ignored while checking # Since punctuation, capitalization, and spaces are often ignored while checking
# Palindrome, we first remove them from our string. # palindromes, we first remove them from our string.
s = "".join([character for character in s.lower() if character.isalnum()]) s = "".join(character for character in s.lower() if character.isalnum())
return s == s[::-1] return s == s[::-1]
if __name__ == "__main__": if __name__ == "__main__":
s = input("Enter string to determine whether its palindrome or not: ").strip() s = input("Please enter a string to see if it is a palindrome: ")
if is_palindrome(s): if is_palindrome(s):
print("Given string is palindrome") print(f"'{s}' is a palindrome.")
else: else:
print("Given string is not palindrome") print(f"'{s}' is not a palindrome.")