dos

Public/static/js/common.js

@@ -106,7 +106,7 @@ function randomFlagArr(length) {
     for (let i = 0; i < arr.length; i++) {
         arr[i] = RandomNumBoth(0, length - 1);
     }
-    arr.sort(function () {
+    arr.sort(function (a, b) {
         return a - b;
     });
     return arr;