Sun, 15th Nov 2015, 00:17 Re: Programming Lab Stack Execution Question

One clarification on my earlier response to the student.  ...prompted by his
follow up question shown below.

> Does this mean that R5 would never be a failure if someone didn't do the
> extra credit and assumed all test strings were properly formed?
> Thanks,
> <<name withheld to protect the student who forced me to take another look>>

If you come up with the straightforward correct algorithm that I have given
you lots of hints about, then yes, you will never get failure due to a badly
formed string.

HOWEVER, if you come up with a bad algorithm, then you could end up pushing
and popping random amounts and end up thinking you had a bad expression.

Good luck getting this done in time.

Yale Patt