正则表达式获取字符串 [英] Regular Expression to get strings

问题描述

string str ="my first statement xxx my second statement xxx my third statement";

我应该如何基于搜索"xxx"之间的字符串编写正则表达式以获取上面列出的三个语句

how shall i write a regular expression to get three statements listed above based on searching strings between "xxx"

推荐答案

任务，只需使用 String.Split [

You don''t even need regular expressions for such a task, just using the String.Split[^] method is enough.

如果您的情况建议您使用 CPallini 的解决方案此处 [

If your case isn''t more complex than stated in your question I''d advise you to go with CPallini''s solution here[^].

Just in case you''d like to know anyhow how a regular expression would look like to achieve your goal:

(.*?)(xxx|

)

该表达式已通过免费工具 Regular Expression Designer [

This expression was verified to work with the free tool Regular Expression Designer[^].

It will give you four matches instead of three where the last match is the empty statement followed by the end of line. This is about the simplest regular expression I could come up with to achieve your goal.

Regards,

Manfred

P.S.: If anybody has a shorter variant please let me know. :)

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