[英]Evaluating a mathematical equation in an Array
Im working on a simple app about factoring polynomials and so far i have used我正在开发一个关于分解多项式的简单应用程序,到目前为止我已经使用过
.equals();
to check and compare the answers.检查和比较答案。 But i realized that for example 4x^2 + 2x - 4 is the same as 2x + 4x^2 - 4. I am wondering how i can check without adding "2x + 4x^2 - 4" in my array?
但我意识到例如 4x^2 + 2x - 4 与 2x + 4x^2 - 4 相同。我想知道如何在不添加“2x + 4x^2 - 4”的情况下进行检查? I thought about splitting it into tokens but how do i compare it tho?
我想把它分成令牌,但我如何比较它呢?
split the array on based of operators, then you can compare each term separately.根据运算符拆分数组,然后您可以分别比较每个术语。 even order of terms can be checked.
甚至可以检查术语的顺序。 Since this is a string i see no other solution to this.
由于这是一个字符串,我看不到其他解决方案。
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