There’s an explanation of how to implement a perfect hash generator in “Hacker’s Delight” that you can read to take a known set of keys and produce a consistent

There’s an explanation of how to implement a perfect hash generator in “Hacker’s Delight” that you can read to take a known set of keys and produce a consistent perfect hash at runtime. It’s a very worthwhile thing to keep in your back pocket if you’re going to deal with hashes whose keys are 100% knowable at runtime but not before.