Hello. I would need a small script software formerly produced by other developer to be adjusted (created in some C version to .exe file), or a new software to be coded from scratch, whichever is the less time-consuming.
You can use RegEx or any other tool or language, but the result should be as the specs describe. If the result is not an .exe file but something else, like a webpage to be loaded in html, js, ajax, php etc doesn't matter. But it should be possible to process an entire book with not too much time spent for the computer.
The script should extract the first and last letter of words in a text file, and calculate some statistics. Please see specs in attached zip file. It's a fast job. I have also included the source code and software from the other developer a similar program. Copy and paste as you like.