Library Expression parsing

Hi. I was bored, so I made an expression parser in Java, for evaluating Strings like "sin(3+4*2/(1-5)^2^3)" as mathematical expressions.

Usage:

Code:

String exp = "sin(3+4*2/(1-5)^2^3)";
ExpressionParser parser = new ExpressionParser(exp);
System.out.println(parser.evaluate());

This uses the Shunting Yard Algorithm (https://en.wikipedia.org/wiki/Shunting-yard_algorithm).

GitHub: https://github.com/MCMastery/expression-parser

You could use this for user-given calculations.

Probably not that useful, but I've seen many questions about how to evaluate expressions in Java elsewhere.

Thanks for reading ,_,

 

@MCMastery
Looks nice! And a lot better than the recursive one I made some time ago
And better than anything I could come up with

Still wonder why people name Interfaces "Ixxx" though. Any special reason? Shouldn't an IDE format them accordingly?

Maybe not that useful, I rarely found the need to evaluate an expression myself (and you could use the Rhino engine. If you want to backstab performance and security... Critical.), but I still find it useful to see how other, better, people solve this problem.

Will try to recreate this, and then compare it to yours. And then probably change it by a ton, to closer resemble what you did

So thank you, random person from the internet

 

I just called it "Ixxx" so I could have IFunction and the Function enum

Thanks for the reply lol

 

aw man i was working on this but you beat me.
I know why you are doing this ^w^
Message me so we can do more work!
@MCMastery I might not be on as much as expected- Im on a hotel computer