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评估字符串中的数学表达式
原标题:Evaluate mathematical expression within string

我正在开发一个安卓软件, 我得到一个带有数学表达式的字符串,我必须计算, 我这样做是为了把字母转换成我需要的数字, 但是什么是评估这个的最佳方法呢?

Nothing too complicated, the formulas are like those: ((A * 2 + B * 3 + C * 5) / 10) + D

EDIT: Just found that guy, very simple API, works like a charm http://code.google.com/p/symja/wiki/MathExpressionParser

最佳回答

您想要某种数学 < a href=>" "http://en.wikipedia.org/wiki/Parser" rel="nofollow">parser 。

滚动自己的乐趣, 或者在谷歌上有很多点击 : < a href=" https://www.google.co.uk/#hl=en&gs_nf=1&gs_nf=1&cp=16&gs_id=7&gs_id=7&xhr=t&qq=java+marth+parser" rel="nofolp" > https://www.google.co.uk/#hl=en&gs_nf=1&cp=16&gs_id=7&xhr=t&q=java+math+parser

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