How to Solve Valid Palindrome Problem
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Valid Palindrome
A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers. Given a string s, return true if it is a palindrome, or false otherwise.
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Understanding the Valid Palindrome Problem
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Problem Statement
A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers. Given a string s, return true if it is a palindrome, or false otherwise.
Valid Palindrome
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Examples
# Example 1
s = "A man, a plan, a canal: Panama"
true
# Example 2
s = "race a car"
false
# Example 3
s = " "
true
Constraints
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Solve Valid Palindrome — A phrase is a palindrome if, after converting all uppercase letters into lowerca...
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