正则表达式以查找##之间的字符

Question

I have text as below

Here is some text #variable name# that goes very long with #another variable name# and 
goes longer #another another variable# and some more.

I would like to write a regular expression that splits this text into groups like this

Group 1: Here is some text 
Group 2: #variable name#
Group 3: that goes very long with 
Group 4: #another variable name#
Group 5: and goes longer 
Group 6: #another another variable#
Group 7: and some more

My attempt is poor. I am not able to get my head around this thing

(.*?)*(#.*#)*(.*?)*

Also, this needs to work in Java.. like the below

    import java.util.regex.Matcher;
import java.util.regex.Pattern;

import static java.util.regex.Pattern.*;

public class Test {

    public static void main(String[] args) {
        Pattern pattern = compile("(([^#]+)|(#[^#]+#)) ");
        String string="Here is some text #variable name# that goes very long with #another variable name# and " +
                "goes longer #another another variable# and some more.";
        Matcher matcher = pattern.matcher(string);
        while(matcher.find()){
            System.out.println(matcher.group());
        }
    }
}

Answer 1

([^#]+)|(#[^#]+#)

Try this.Grab the captures.See demo.use g flag or global match.

http://regex101.com/r/pQ9bV3/1

Answer 2

You could try the below regex,

(#[^#]*#)|\s*(.*?)(?=\s*(?:#|$))

DEMO

Answer 3

(.*?[^\#])|(#.*#)

试试这个正则表达式

Answer 4

This would seem to be what you are looking for:

([^#]+|#[^#]+#)

Or if you want the white-space trimmed:

\s*([^#]+?(?=\s*#|$)|#[^#]+#)

Answer 5

one more pattern to have trimmed results

(#[^#]+#|[^#]+)(?:\s|$)

Demo

(               Capturing Group \1
  #             "#"
  [^#]          Character not in  [^#]
  +             (one or more)(greedy)
  #             "#"
  |             OR
  [^#]          Character not in  [^#]
  +             (one or more)(greedy)
)               End of Capturing Group \1
(?:             Non Capturing Group
  \s            <whitespace character>
  |             OR
  $             End of string/line
)               End of Non Capturing Group