Solution: Valid Palindrome
Explore how to efficiently check if a string is a valid palindrome by using the two pointer technique. This lesson guides you through skipping non-alphanumeric characters, performing case-insensitive comparisons, and implementing a time and space efficient solution in JavaScript.
Statement
Given a string, s, return TRUE if it is a palindrome; otherwise, return FALSE.
A phrase is considered a palindrome if it reads the same backward as forward after converting all uppercase letters to lowercase and removing any characters that are not letters or numbers. Only alphanumeric characters (letters and digits) are taken into account.
Constraints:
s.length...