Yes, but it doesn't matter what order they are in if you put them in a DB. I don't know anybody that would do a sequential scan over a file in production.

All you've done is shuffled around the most frequent cases to the beginning, which is great if that's what you are looking for, but now something else occupies the last slot and that case is just as bad as before.

The real solution is to see these files as input to an indexed table so that you can get to the entry you want in log(n) time.