Helping With Programming Q's
Answering Questions from others on stack is one thing which is fine - it is outside your course.

Posting an assignment to get it solved for you or posting the solved assignment for others is not...

Students have long helped each other, by working through problems and applying the process etc but NOT by handing over a complete solution to a graded assignment - that is cheating and most institutions will be after both the cheat and the person helping them...