Doubt regarding parsers

Question

I know how to draw tables of all parsers.

I know that in LR(0) while reducing you have to put reduce in every action of entire column. In SLR(1) it is done only in follow of that non terminal.

But I want to know how to solve these types of question fastly and effectively.

And I also want to know which conflict I should find first

--) Shift-Reduce or Reduce -Reduce  in order to tell fast which parser it is.

Comments

Exactly what type of questions? Conflict checking or table filling?

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find which type of parsers simply.

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If asked upto CLR(1) then directly make canonical set of LR(1) items. Keep mind open when LR(0) and SLR(1) would fail. Try to check productions which have only one terminal in RHS. These productions generally create conflicts.

In other words, try to reduce those productions which would create conflict first and then check if, in order, any parser can overcome the conflict. It will become easy once you have practiced enough questions.