php - rewrite url based on specific sub-directory using.htaccess -

i wondering whether it's possible use .htaccess search particular folder starts number , redirects internally without changing url in browser.

lets have url like:

www.example.com/api/rest/3.22/user 

now want rewrite url internally (for example)

www.example.com/api/rest/3.0/user 

note: 3.0 folder available in server , 3.22 name.

i tried following one,but not helps.

rewriterule ^api/rest/3\.22/$ /api/rest/3.0/$1 

try rule in root .htaccess:

rewriterule ^(api/rest)/(?!3\.0/)[\d.]+/(\w+)$ /$1/3.0/$2 [l,nc]