challenge from last semester from a professor. i couldn't solve it then because i wasn't aware of the power of the stack.
works okay...
run with -a to sort the operands alphabetically
- supports brackets also
things that you shouldn't do
- run with brackets that are not parentheses
operators are
"=" BiConditional,
">" Implies,
"+" Or,
"&" And,
"~" Not
all tests runs are confirmed by this http://turner.faculty.swau.edu/mathematics/materialslibrary/truth/
