pqueue VS Advent_of_Code_in_Pascal

This limitation did give me an excuse to implement Dijkstra's algorithm from scratch, which was fun; it also allowed me to play around with the pqueue library, which is very convenient although also imposes its own set of constraints that require the user to have a good amount of foreknowledge about the data they plan to insert into the queue. Since I didn't have that for this problem, I chose a pessimistic heuristic that doesn't seem to impact performance much for the data sizes we're dealing with here.

I'm doing it in Lazarus/Free Pascal again.

https://github.com/mikewarot/Advent_of_Code_in_Pascal

Free Pascal - 2251/1744 34.5 seconds runtime No objects, no recursion After brute forcing part 1, I stared at part 2 until I though only handling the different values of X,Y,Z and letting the grid represent variable size cubes.. only to hit memory size limits anyway... and then I learned how to use BITPACKED array, and was able to eventually brute force part 2. Whew!

Pascal 2235/4609

Pascal - Github

Pascal 7079/6330 - github

Github - https://github.com/mikewarot/Advent_of_Code_in_Pascal/blob/master/2021/advent2021_15b.lpr

My pascal based solver eventually got valid text out of your input.

Pascal 2437/6187

Pascal 3590/5744