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Update palindrome_checker.py #256

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19 changes: 15 additions & 4 deletions palindrome_checker.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,18 @@
# palindrome_checker.py
def is_palindrome(s):
return s == s[::-1]
# Normalize the string: convert to lower case and filter out non-alphanumeric characters
normalized_s = ''.join(char.lower() for char in s if char.isalnum())

# Check if the normalized string is equal to its reverse
length = len(normalized_s)
for i in range(length // 2):
if normalized_s[i] != normalized_s[length - 1 - i]:
return False

return True

if __name__ == "__main__":
word = input("Enter a word: ")
print(f"{word} is a palindrome: {is_palindrome(word)}")
word = input("Enter a word or phrase: ")
if word.strip() == "":
print("You did not enter a valid string.")
else:
print(f"'{word}' is a palindrome: {is_palindrome(word)}")