[BUGFIX] SonarQube: Prefer class field declaration over this assignment in constructor for static values.

Class properties should be declared as fields rather than assigned in constructors javascript:S7757

Author: Gonzalo Diaz

src/hackerrank/interview_preparation_kit/sort/ctci_bubble_sort.js

@@ -5,12 +5,11 @@
 const SEPARATOR = '\n';
 
 class SortableGroup {
-  group;
+  count = 0;
 
-  count;
+  group;
 
   constructor(group) {
-    this.count = 0;
     this.group = group;
   }