Palindrome Checking Algorithm | Dataford Interview Questions

Change Healthcare systems may receive short identifier strings that require basic validation before processing. Given a string s, determine whether it is a palindrome, meaning it reads the same from left to right and right to left.

Compare characters exactly. The comparison is case-sensitive, and spaces, punctuation, and other characters are part of the string.

Formal Specification

Implement is_palindrome(s), where:

Input: s, a non-null string.
Output: Return True if s is a palindrome; otherwise, return False.

Use a two-pointer approach that compares characters from the beginning and end while moving toward the center.

Constraints

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

Function Signature

def is_palindrome(s):

Your question is Palindrome Checking Algorithm. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem