Which order is this?(pre order, in order, post order)

Question

"Data structure question"

( -B + SQRT ( B2 – (4*A*C*D*E) ^ 5) ) / 2*A*sin(x)

And how to show it in other orders?

Answer 1

Looks like in-order to me.

In-order: a + b - c
Pre-order: - c + a b
Post-order: a b + c -

In order: Op in the middle of two params
Pre-order: Op before two params
Post-order: Op after two params

So to see it clearly:
In-order: ((a + b) - c)
Pre-order: (- c (+ a b))
Post-order: ((a b +) c -)