MATLAB: Regexp Find Digit between two hyphens

regular expressions

I have a str that looks like this:

str = '7-6-1'

and I would like to return 6.

I was able to return 7 using ^[^-]*[^ -] but can't seem to find the expression to return the second item.

(?<=-)\d(?=-)

Is one of the ways.

(?-)\d(?-)

might work

Any number of regular expression would do 'extract whatever is between two brackets:

str = 'a_b_c_d(1.0)';
regexp(str, '(?<=\()[^)]*(?=\))', 'match', 'once')

is one possibility. This

These two returns "123"

%%

cac = regexp('ITEM 123', '.+?(\d+)', 'tokens' )
%%
cac = regexp('ITEM 123', '[^\d]+(\d+)', 'tokens' )

First, '.+' matches anything up til the end of the text, next it gives back just as little as needed to match '(\d+)' , which is one digit.

'.+?' matches as little as needed so that '(\d+)' is able to match the following text.

I prefer '[^\d]+(\d+)'

Or why not just

cac = regexp('ITEM 123', '\d+', 'match' )