Advent of Code 2021

Go 1.20 solutions to the Advent of Code problems. Check out https://adventofcode.com/2021

• Put input.txt as downloaded from the Advent of Code website into the folder corresponding to the day
• Run go generate, go build, ./aoc2021 day part
• Run ./aoc2021 -h for options

Dependencies

For building:

• PowerShell (if using build.ps1)
• goimports (if using goimports instead of go fmt)
• modd (if using modd)

https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell

go install golang.org/x/tools/cmd/goimports@latest
go install github.com/cortesi/modd/cmd/modd@latest

For code:

• https://github.com/zellyn/kooky - for reading Advent of Code session cookie from browser cache
• https://github.com/mattn/godown - for converting Advent of Code puzzle description from html to markdown

Notes

• Input is never validated, it is assumed to be correct
• Tested on PC (intel i9) and Raspberry Pi
• On the test PC each puzzle part did not take more then 100 milliseconds to run
• Downloaded puzzle texts is in the puzzles folder. It is not always entirely accurate as godown occasionally makes a mistake.