@@ -0,0 +1,16 @@
+var twoSum = function (num, tar) {
+    var res = [];
+
+    for (var i = 0; i < num.length; i++) {
+        for (var j = i + 1; j < num.length; j++) {
+            if (num[i] + num[j] === tar) {
+                res.push(i);
+                res.push(j);
+            }
+        }
+    }
+    return res;
+}
+
+console.log(twoSum([2, 7, 11, 15], 9));
+// Output [ 0, 1 ]