* add array stack

* add array stack

* verify google java format

* array stack

* array stack

* fix IntQueue bugs and re-implement IntQueue, add ArrayQueue

* add comment for ArrayQueue

* modify the comment

* fix the mod problem

* fix the mod problem

* Range update of an array added with tests

* Suggested changes added

* Explanation for update and finalize method added

* Change RangeUpdate to LazyRangeAdder and Add tests + comments

* QuickSort3 implementation added with tests

* Required changes added

* Formatting issue resolved

Co-authored-by: William Fiset <williamfiset@Williams-Mac-mini.local>