conversion from infix to prefix

Question

I am preparing for an exam where i couldn\'t understand the convertion of infix notation to polish notation for the below expression:

(a–b)/c*(d + e – f / g)         


        

Answer 1

(a–b)/c*(d + e – f / g)

Prefix notation (reverse polish has the operator last, it is unclear which one you meant, but the principle will be exactly the same):

1. (/ f g)
2. (+ d e)
3. (- (+ d e) (/ f g))
4. (- a b)
5. (/ (- a b) c)
6. (* (/ (- a b) c) (- (+ d e) (/ f g)))