Regular Expression Problem , Please Help

I have no idea how to do this ..

str = '[a,b,c,d,e,[f1,f2],g],[u,v,w,[x1,x2],[y1,y2],z]';

Using this code:

regexp(str,'\[.*?(\[.*?\],[.*?\]).*?\]','tokens');

i got an answer like this:

ans =[f1,f2],g],[u,v,w,[x1,x2]

but what I want is like this:

ans = [x1,x2],[y1,y2]

[Matt Fig]

What is the general form of the string? Will x1 and y1 be numbers? What about a, b, f1, g, u and z? I ask for the general form because right now it is not very interesting for regexp.

regexp(str,'\[x1.*\y2]','match')

[Yowh]

the string is dynamic ..

[Matt Fig]

That doesn't really answer the question. I showed you how to find the answer you requested, then I asked you to give the general form, including the rule for finding what you want. "The string is dynamic" tells me nothing really. Good luck.

Answer 1

[Walter Roberson]

Remember, .* will match everything including [ or ] characters. You need to exclude those characters from the search if you are looking for the ] matching a [ .

[Yowh]

I have tried this but it doesn't work:

ans = regexp(str,'\[.*?\[[^\]]*?\].*?\]','match')