Advent of Code 2021 retrospective

A look back at the most interesting or tricky problems in this annual programming challenge.

The Advent of Code is a series of daily programming puzzles running up to Christmas. In this meeting we review some of the problems we found interesting or challenging from 2021.

Resources

• Advent of Code web site
• Talk slides
• Blog post
• David’s R package adventofcode2021
• Heather’s R package **adventofcode21
• Flood fill algorithm
• Optimize your R Code using Memoization
• Warwick R User Group