Regex to match numeric and special chatacters

Question

I need regex which matches as per below values:

1. abc123 - Do not match
2. 123 - Match
3. a123bc - Do not match
4. a#b%c - Match
5. 13&ab12% - Match
6. আফ্রিকার - Do not match

In short, it matches with only numeric string and any string with special character(#,&,%). Also it do not match with any other language string.

I tried this regex but it didn't work for me.

"^[\\d][#&%]+$"

Answer 1

尝试类似

的内容

"^\\d+|(.*[#&%].*)$"

Answer 2

尝试以下正则表达式：

^((?=.*[#&%]).+|\d+)$

说明：

^               -> Start of the string
(?=.*[#&%]).+   -> Match at least one special character (#,&,%) from One or more character
|               -> Or Condition
\d              -> Match digit
$               -> End of the String