Can we implement quick sort to sort a StringList in wM?
If yes, can we achieve it with simple flow service or a java service needs to be built?
A StringList in IS is just a Java String array. You can use Arrays.sort() which uses a modified mergesort algorithm. If you really need/want a quicksort, do a search of the web for “java string array quicksort” and you’ll likely get some hits on code you can use.
In either case, you’d create a Java service.