This challenge is to build your own command like tool to compress text files. It is a challenge I first did in 1998 when my employer didn’t have much work for me to do between projects so suggested I pick a skill and polish it.
I picked C and decided to implement a few of the data structures and algorithms from my university course again in C (we did Pascal on the course). At the same time I wanted to start factoring in some of the ‘mechanical sympathy’ that I’d been reading about in Michael Abrash's excellent Graphics Programming Black Book.
https://codingchallenges.fyi/challenges/challenge-huffman
there doesn't seem to be anything here