diff --git a/sort.js b/sort.js
new file mode 100644
index 0000000..46e4052
--- /dev/null
+++ b/sort.js
@@ -0,0 +1,12 @@
+var sortNumber = function (number) {
+   number.sort(function (a, b) {
+       if (a === b) {
+           return 0;
+       }
+       return a < b ? -1 : 1;
+   });
+};
+
+var number = [19, 3, 81, 1, 24, 21];
+sortNumber(number);
+console.log(number);