EasyString· 77% acceptance
#482

Valid Palindrome 32

Easy

After removing non-alphanumeric characters and ignoring case, determine if `s` reads the same forward and backward. Variant **#32**.

Example 1

Input: s = "racecar32"

Output: false

Constraints

  • 1 <= s.length <= 2 * 10^5

Acceptance: 77% · Topics: string, two-pointers

isPalindrome

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