Bulk Date format change

[deanteaster@mac.com]

I have thousands of files that begin with mm-dd-yyyy and would like to change them using the same data, but arranged as yyyy-mm-dd. I am posting this to see if anyone can write me the program to do this on a MAC operating system so I can just copy platform and load data. The file names are as follows: mm-dd-yyyy File Name.pdf. I only want to change the date portion. Thanks for any help.

[TheGhost78]

RegEx (1)

Match:
(\d{2})-(\d{2})-(\d{4}) (.+)

Replace:
\3-\1-\2 \4