正则表达式匹配顺序

本文介绍了正则表达式匹配顺序的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我的问题很简单，假设我想用一个单词来匹配元音，但是我想按照出现的特定顺序来匹配它们，例如a，e，i，o，u.我将如何去做?

My question is simple suppose I would like to match the vowels in a word, but I would like to match them in a specific order as the appear such as a, e, i, o, u. How would I go about doing this?

推荐答案

因此，您要查找 a 后跟一些字符，然后是 e 后跟一些字符，等等吗?

So you're looking for a followed by some characters, then e followed by some characters, and so forth?

换句话说，先 a ，然后是不是 e 的内容，然后是 e .然后是不是 i 的东西，然后是 i 的东西.然后是不是 o 而不是 o 的东西.最后是不是 u 的东西，最后是 u 的东西.

In other words, a followed by stuff that isn't e, then e. Then stuff that isn't i then i. Then stuff that isn't o then o. And finally stuff that isn't u and lastly a u.

在正则表达式中，这是 a [^ e] * e [^ i] * i [^ o] * o [^ u] * u

In regexp terms, that's a[^e]*e[^i]*i[^o]*o[^u]*u

(您可以使用.*?来解决，但是当您可以更精确地定义您的意思时，为什么要这么做呢?)

(You could get by with a .*? but why do that when you can more precisely define what you mean.)