juque · March 27, 2024 10:29 · Mar 27, 2024
diff --git a/isPalindrome.js b/isPalindrome.js
@@ -0,0 +1,26 @@
+function isPalindrome(str) {
+
+  str = str.replace(/[^a-z0-9]/i, '').toLowerCase();
+
+  if ( str.length === 0) {
+    return true;
+  }
+
+  let left = 0;
+  let right = str.length - 1;
+
+  while ( left < right ) {
+    if ( str[left] !== str[right] ) {
+      return false;
+    }
+    left++;
+    right--;
+  }
+
+  return true;
+
+}
+
+console.log(isPalindrome('kayak'));
+console.log(isPalindrome('radar'));
+console.log(isPalindrome('letters'));