Passing directories and files

I am using the FIND command on a number of directories stored in FDIR array to execute HEAD on each file. How can I adapt the code so users can also include files as well as directories?

hn=8
nf=${#fdir[@]}
for (( i=0 ; i < $nf ; i++ )); do
find "${fdir[$i]}" -type f \
-exec head -v -n "$hn" '{}' +
done
The synopsis of the GNU find command is

find [-H] [-L] [-P] [-D debugopts] [-Olevel] [starting-point...] [expression]

where [starting-point...] is zero or more paths. There is nothing stopping the user from passing files as starting points

Example, given:

$ cat subdir/somefile
foo
bar
baz

then

$ find subdir/somefile -

type

f -

exec

head -n 2 {} +
foo
bar

I could just do

find

"

${fdir[@]}

"

-

type

f -

exec

head -v -n

"

$hn

"

'{}'

+

regardless of the mix of directories and files in FDIR.

But is this the right and proper way to use the FIND command?