Just my Advent Of Code solutions for 2019 ( https://adventofcode.com/2019 )
Readability is more important than optimization for me: there are most likely way faster solutions than mine. ...And most likely way more readable as well. : )
Highly recommend not looking at the follow-up intcode computer tasks (5,7). The tasks were a lot lower level than I prefer (you're practically making a simple CPU), so I haven't really cleaned them up all that much.