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Update palindrome_checker.py #263

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13 changes: 11 additions & 2 deletions palindrome_checker.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,15 @@
# palindrome_checker.py
def is_palindrome(s):
return s == s[::-1]
# Normalize the string: convert to lowercase and filter out non-alphanumeric characters
filtered_s = ''.join(c.lower() for c in s if c.isalnum())

# Use two-pointer technique to check for palindrome
left, right = 0, len(filtered_s) - 1
while left < right:
if filtered_s[left] != filtered_s[right]:
return False
left += 1
right -= 1
return True

if __name__ == "__main__":
word = input("Enter a word: ")
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