正则表达式:提取由特定单词分隔的单词

Question

这些是输入字符串:
第 1 行:item1 199-30, 1/1/2021
第 2 行:item2 29 minus 5, 1/1/2021

我想使用正则表达式来提取，如下所示:
第 1 行:199、30
第 2 行:29、5

我尝试过，这是我的正则表达式:
([\d]+)[-|(\s*减\s*)]([\d]+)

仅匹配第 1 行。

Answer 1

根据您显示的示例，请尝试以下正则表达式。

^item\d+\s+(\d+)(?:-|\s+minus)\s*(\d+)

Online demo for above regex

说明:为上述内容添加详细说明。

^item\d+\s+        ##Matching item from starting of value followed by 1 or more digits followed by 1 or more space occurrences.
(\d+)              ##Creating 1st capturing group which has digits in it.
(?:-|\s+minus)\s*  ##In a non-capturing group matching either - OR 1 or spaces followed by minus. Matching 0 or more spaces.
(\d+)              ##Creating 2nd capturing group which has digits in it.