I think its still in debate Etiquette for answering your own question
Normally when I have a question and a answer, but have doubt with my own attempt, I tend to put the solution within my question. And I'll only post the question (if without a solution in my mind), and could post my solution afterwards separately as a answer to my own question (if I can found out one).
But today I met this question and been enlightened to always post them separately, is this the case? Maybe its there but I really can't find it in FAQ, and even it is, I still feel a question for suggestions of your own answer should include the solution in the question.