diff --git a/benchmark/code/for.js b/benchmark/code/for.js
new file mode 100644
index 0000000..ba5cf02
--- /dev/null
+++ b/benchmark/code/for.js
@@ -0,0 +1,14 @@
+'use strict';
+
+module.exports = function(arr) {
+  var len = arr.length;
+  var res = [];
+
+  for (var i = 0; i < len; i++) {
+    var curr = arr[i];
+    if (res.indexOf(curr) === -1) {
+      res.push(curr);
+    }
+  }
+  return res;
+};