# Groovy ## Easy: <strike>26</strike> 25 characters c={(it=~/[\W^_]/).size()} assert c("abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789")== 2 assert c("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")==0 assert c("a-b-7*NNuah ~#77%")==7 assert c('_') == 1 ## Hard: 47 characters s={it.replaceAll(/[\w&&[^_]]/,'').bytes.size()} assert s("abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789")== 2 assert s("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")==0 assert s("a-b-7*NNuah ~#77%")==7 assert s('_') == 1