Check If String Is Palindrome | Dataford Interview Questions

Moz Pro processes short text tokens used in SEO analysis. Given a string s, determine whether it is a palindrome, meaning it reads identically from left to right and right to left.

Treat comparisons as case-sensitive. Every character, including spaces and punctuation, is significant. Return True if s is a palindrome and False otherwise.

Formal Specification

Input: s, a string containing zero or more characters.
Output: A boolean indicating whether s is a palindrome.

Aim for a single scan using two indices that move inward from opposite ends.

Constraints

0 <= len(s) <= 10^5
s contains printable ASCII characters
Comparisons are case-sensitive
Spaces and punctuation are significant

Function Signature

def is_palindrome(s):

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Problem