Advent Of Code

2025

• Day04, "Printing Department"

• Day07, "Laboratories"

• Day08, "Playground"

2024

TODO: d15p1, d13

• Day14, Easter Egg

• Day08, antinodes of antennas

• Day06, guard moves

2023

• Day14, shifting mirrors part1

• Day14, shifting mirrors part2

• Day08, network for part2

• Day10, ASCII by using PY Berrard UTF-8 code trick

• Day05, part2 to be tried in Rust like here

2022

• Day06: irrelevant but useful function to create groups based on state changes using rle
• Day07, fail but need to try R6 and also understand the igraph solution

2021

• Day02: Kara Woo used R6 class
• Day05:
• Day06: Miles McBain interesting use of lists.

And nice usage of scan():

fish_ages <- scan("input/06", what = integer(), sep = ",")

• Day07: David Robinson great stat tricks

• Day09:

• Day11: David Robinson solution

• Day13:

• Day15: