valid palindrome solution

Author: yoon-turtle

valid-palindrome/yoonthecoder.js

@@ -0,0 +1,11 @@
+var isPalindrome = function (s) {
+  // remove any special characters and space from the string
+  const formattedString = s.toLowerCase().replace(/[^a-zA-Z0-9]/g, '');
+  // use split() method to separate each charaters and put them in an array - reverse it - concatenate
+  const reversedString = formattedString.split('').reverse().join('');
+
+  return reversedString === formattedString;
+};
+
+// time complexity: O(n)
+// space complexity: O(n)