diff --git a/002-palindrome/index.js b/002-palindrome/index.js
index 1a2c6b0..9116922 100644
--- a/002-palindrome/index.js
+++ b/002-palindrome/index.js
@@ -6,5 +6,15 @@ const palindrome2 = (str) => {
   return str.split('').every((char, index) => char === str[str.length - index - 1]);
 };
 
+// Solution 3
+const palindrome3 = (str) => {
+  for (let i = 0, j = str.length - 1; i < j; ++i, --j) {
+    if (str[i] !== str[j]) {
+      return false;
+    }
+  }
+  return true;
+};
+
 const palindrome = palindrome2;
 module.exports = palindrome;