正则表达式匹配数字与前瞻

Question

I have a regex:

(\d{1,20})

Answer 1

You may use a capturing group instead of the infinite-width positive lookbehind:

(JPY;\s*\d{1,20})

And replace with $1.00 . See the regex demo .

Depending on the regex engine, you may remove the (...) capturing parentheses, and use $0 or $& instead of the $1 in the replacement pattern.

Also, if you need to match these values as whole words, enclose with word boundaries: \\b(JPY;\\s*\\d{1,20})\\b .