Bash native command to reverse the order of most basic parameter

[Budi]

How the Bash native command to reverse the order of native bash
parameter loop illustrated:
Code:
$ foo() {
 for i ;{ printf "%d\n" $i; }   # ? what is solution
}
not to be
Code:
$ foo 7 8 9
7
8
9
instead must do

Code:
$ foo 7 8 9
9
8
7