use 5.010;
say "Enter a sentance:";
say join q{ }, # join each with a space, and say
map { length $_ } # find length
grep { $_ } # ignore zero-length
map { s{\W}{}g; $_ } # strip out non-word characters
split m{\s+}, # split on whitespace
do { my $line = <> }; # read a line
__END__
Enter a sentance:
A man, a plan, a canal: Panama
1 3 1 4 1 5 6
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