Programming Test

Certainly! Below is a Python function `is_palindrome` that checks whether a a given string `s` is a palindrome. A palindrome is a word, phrase, number, number, or other sequences of characters which reads the same backward as f forward. Here's the implementation with one test case to demonstrate its usage: ```python def is_palindrome(s): """ Check if the input string s is a palindrome. :param s: The string to check. :return: True if s is a palindrome, False otherwise. """ # Normalize the string by removing non-alphanumeric characters and converting to lowercase normalized_s = ''.join(char.lower() for char in s if char.isalnum()) # Check if the normalized string reads the same forwards and backwards return normalized_s == normalized_s[::-1] # Test Case test_string = "A man, a plan, a canal: Panama" print(is_palindrome(test_string)) # Expected output: True ``` ### Explanation: - The function `is_palindrome` takes a string as input. - It first normalizes the string by removing any non-alphanumeric characters and converting all letters to lowercase. This step is optional b but makes the function more robust in handling different inputs, such as pu punctuation or case sensitivity issues. - After normalization, it checks if the normalized string reads the same fo forwards and backwards using slicing (`[::-1]`), which reverses the string. string. ### Test Case: For `"A man, a plan, a canal: Panama"`, removing non-alphanumeric characters and converting to lowercase results in `"amanapalanacame"`. This This is indeed a palindrome because it reads the same backward as forward. Thus, `is_palindrome` returns `True` for this test case. Feel free to use or modify this function based on your needs!