w03: 125. Valid Palindrome

Author: Heeseung Koo

valid-palindrome/nrudev.ts

@@ -0,0 +1,4 @@
+function isPalindrome(s: string): boolean {
+  const str = s.toLowerCase().replace(/[^a-zA-Z0-9]/g, "");
+  return str === str.split("").reverse().join("");
+}