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Merged
merged 3 commits into from
May 22, 2020
Merged

Update is_palindrome.py #2025

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cbd6d58
Update is_palindrome.py
ashwindasr May 22, 2020
7057066
Update is_palindrome.py
ashwindasr May 22, 2020
26dcf5a
Reuse s
cclauss May 22, 2020
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11 changes: 10 additions & 1 deletion strings/is_palindrome.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
def is_palindrome(s):
def is_palindrome(s: str) -> bool:
"""
Determine whether the string is palindrome
:param s:
Expand All @@ -7,7 +7,16 @@ def is_palindrome(s):
True
>>> is_palindrome("Hello")
False
>>> is_palindrome("Able was I ere I saw Elba")
True
>>> is_palindrome("racecar")
True
>>> is_palindrome("Mr. Owl ate my metal worm?")
True
"""
# Since Punctuation, capitalization, and spaces are usually ignored while checking Palindrome,
# we first remove them from our string.
s = "".join([character for character in s.lower() if character.isalnum()])
return s == s[::-1]


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