Create 125-Valid-Palindrome.js

veerbia · web-flow · commit 22cee9183e78 · 2022-04-03T11:46:22.000-07:00
diff --git a/javascript/125-Valid-Palindrome.js b/javascript/125-Valid-Palindrome.js
@@ -0,0 +1,19 @@
+/**
+ * @param {string} s
+ * @return {boolean}
+ */
+var isPalindrome = function(s) {
+    s = s.toLowerCase();
+    s = s.replace(/[^A-Z0-9]/gi, '');
+    
+    let i = 0
+    let j = s.length - 1;
+    
+    while (i < j) {
+        if (s[i] !== s[j]) return false;
+        
+        i++;
+        j--
+    }
+    return true;
+};
