MATLAB: Recovering text between parentheses using regexp

Question

Hi,

I am trying to create a regular expression using which i can recover the string between two parenthesis. I have created the following expression

 exp='[^(]+.*[^)]+';
 matchStr = regexp(str,exp,'match');

This expression works fine if the string is off any one of the formats mentioned below:

a) str = '(1r)';

b) str = '(0.5;0.5;'rrr')'; etc

but does not work if the string is off the form

str = '(r)'; or str = '(1)';

i.e. it doesn't pick up string which are just off 1 character between the parenthesis. I think i am missing something very basic here. Is it that regex will not work for single characters and will only work for strings?

Thanks in advance,

Regards,

Giri

Answer 1

exp = '[^()]*'; should be it.