Vibe Coding Arena

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Palindrome Check

easy

Given a string `s`, determine if it is a palindrome. Consider only alphanumeric characters and ignore case.

Return `True` if it is a palindrome, `False` otherwise.

Function Signature

def is_palindrome(s: str) -> bool:

Examples

Input: s = "A man, a plan, a canal: Panama"

Output: True

Input: s = "race a car"

Output: False

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Test Results

Test 1

is_palindrome("A man, a plan, a canal: Panama")

Expected: True

Test 2

is_palindrome("race a car")

Expected: False

Test 3

is_palindrome("")

Expected: True

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