编译器最左推导最右推导

最左推导最右推导1.文法 S->a|^|(T) T->T,S|S (1) 对(a,(a,a)的最左推导为: S=>(T) =>(T,S) =>(S,S) =>(a,S) =>(a,(T)) =>(a,(T,S)) =>(a,(S,S)) =>(a,(a,S)) =>(a,(a,a))