请问这个正则要怎么写呢? - V2EX
morri

请问这个正则要怎么写呢?

  •  
  •   morri Dec 31, 2022 1980 views
    This topic created in 1229 days ago, the information mentioned may be changed or developed.

    字符串如下:

     1933 the sneaking10 around, she said, was distressing11. 

    我要匹配以字符串开始数字结尾的子串中的数字。 1011, 单独的 1933 不用匹配。

    现在 [a-z]+\d+ 可以匹配到 sneaking10distressing11

    如何在这个的基础上在匹配数字呢?

    9 replies    2023-01-01 16:43:33 +08:00
    darer
        1
    darer  
       Dec 31, 2022
    要用断言咧
    Boyce
        2
    Boyce  
       Dec 31, 2022
    [a-z]+(\d+)
    darer
        3
    darer  
       Dec 31, 2022   1
    (?<=[a-zA-Z])\d+
    morri
        4
    morri  
    OP
       Dec 31, 2022
    @darer 厉害~ 这个可以匹配,断言不会呀。有好的博客推荐么,学学 ~
    darer
        5
    darer  
       Dec 31, 2022
    @morri 没必要 知道有这么个东西就行 每次用到的时候现查就好了
    morri
        6
    morri  
    OP
       Dec 31, 2022
    @darer 3q
    wudicgi
        7
    wudicgi  
       Dec 31, 2022   1
    @morri #4 我一般查的时候就看这个文档,页面中有 零宽断言 (?<=exp) 匹配 exp 后面的位置
    https://deerchao.cn/tutorials/regex/regex.htm
    Uyloal
        8
    Uyloal  
       Dec 31, 2022
    试试这个行不行 https://imgur.com/a/vdhd8y5
    Nile20
        9
    Nile20  
       Jan 1, 2023
    正则表达式还是孰能生巧,推荐个网站,可以在线编辑表达式并实时查看匹配效果
    https://regex101.com/
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