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这样的：
Line 1: 199, 30
Line 2: 29,5

我试过了，这是我的正则表达式：
([\d]+)[-|(\s*minus\s*)]([\d]+)

仅匹配第 1 行。

Answer 1

使用您显示的示例，请尝试以下正则表达式。

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

上述正则表达式的在线演示

说明：为以上添加详细说明。

^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.