Advent of Code

This repo is for my solutions to the annual Advent of Code event.

To run

mill adventofcode.runProblem -d 1
mill adventofcode.runProblem -y 2018 -d 1

Things I Learned

• Voronoi Diagram - (2018 - Day 6)
• Topological Sort - (2018 - Day 7)
• Summed Area Table - (2018 - Day 11)
• Dijkstra's Algorithm - (2021 - Day 15)

Scala

• If you're creating really big lists, append to the head.
  • Since Lists are LinkedLists, it has to traverse the whole list to append to the end.