[Tutor] Binary tree expressions
Quiles, Stephanie
stephanie.quiles001 at albright.edu
Tue Aug 18 16:36:37 CEST 2015
Hello!
Not sure if anyone can help me with these or not but here it goes...
I have to draw an expression tree for the following (a+b)*c-(d-e).
I believe that the last move would go first in the tree so in this case you would subtract c after computing what d-e was. So my tree would start out looking like this :
(-)
/ \
(+) (-)
/ \ / \
Sorry not sure how to better draw that...
Is that correct so far? Where do I go from there if I am? The c is really throwing me off here.
Here's the other tree:
((a+b) *c-(d-e)) ^ (f+g)
So for this one you would do everything in the double parentheses first so a+b and d-e then multiple the sum of a+b by c
Then I would subtract c from the sum of d-e.
Then I would look at the right side and add f+g
Finally I would calculate the sum of the left side ^ of the sum of f+g.
So my tree would start with the ^ its children would be * (left child) + (right child)
Is that right so far?
Thanks for your help in advance! The tutorials online are not quite as complicated so I get consider once you start adding in more operators.
Stephanie Quiles
Sent from my iPhone
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