actually I was using shunting yard algorithm to do me one thing: break down the equation into parts so I can swtich tings around. For example if I have a * b + c, then the algorithm should return: a b * c +, and then from here I would list different things, like add b a * c +, or c b a * + to the list of accepted equations, yet there are a lot to consider. But that's really difficult to do, as you will end up brute forcing everything. I believe the same goes to your way of solving it. I'm sure there is a smarter way to solve and take into consideration performance.
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