🌲 Advent of Code 2022 🌲

Solutions for the Advent of Code 2022 puzzles, written in Javascript.

Every day of Advent two new puzzles are released, but you need to solve the first to unlock the second. Each puzzle grants a star, so the objective is to get all 50 stars. My aim is to code efficient solutions and provide an explanation for each of them.

Thanks Eric Wastl for organising this event!

Project structure

Every day has its own folder with the following files:

• input.txt: raw input
• input.js: formatted input
• puzzle1.js: solution to the first puzzle
• puzzle2.js: solution to the second puzzle
• README.md: explanation for both solutions

Note: both puzzles always share the same input, that's why there's only one input file.

How to run

There are three commands:

• npm run create-files: creates the folder and files for a given day.

  Example:

  # Creates the folder and files for Day 1
  npm run create-files -- 1

  Note: since the puzzle input depends on the user, you will need to authenticate yourself in order to fetch it. You can do so by storing your session cookie in a .env variable called AOC_SESSION_COOKIE, obtained by inspecting the network requests to the Advent of Code website.

• npm run add-stars: adds the puzzle stars of a given day to the main README.

  Example:

  # Adds the stars for Day 1
  npm run add-stars -- 1

• npm run solution: runs any solution specifying the day and the puzzle.

  Example:

  # Runs the solution of Day 1 - Puzzle 2
  npm run solution -- 1 2

Solved puzzles

Here's the list of all days, along with the stars obtained in each of them.

Day	Stars
Day 1: Calorie Counting	⭐️ ⭐️
Day 2: Rock Paper Scissors	⭐️ ⭐️
Day 3: Rucksack Reorganization	⭐️ ⭐️
Day 4: Camp Cleanup	⭐️ ⭐️
Day 5: Supply Stacks	⭐️ ⭐️
Day 6: Tuning Trouble	⭐️ ⭐️
Day 7: No Space Left On Device	⭐️ ⭐️
Day 8: Treetop Tree House	⭐️ ⭐️
Day 9: Rope Bridge	⭐️ ⭐️
Day 10: Cathode-Ray Tube	⭐️ ⭐️
Day 11: Monkey in the Middle	⭐️ ⭐️
Day 12: Hill Climbing Algorithm	⭐️ ⭐️
Day 13: Distress Signal	⭐️ ⭐️
Day 14: Regolith Reservoir	⭐️ ⭐️
Day 15: Beacon Exclusion Zone	⭐️ ⭐️
Day 16: Proboscidea Volcanium	⭐️ ⭐️
Day 17: Pyroclastic Flow	⭐️ ⭐️
Day 18: Boiling Boulders	⭐️ ⭐️
Day 19: Not Enough Minerals	⭐️ ⭐️
Day 20: Grove Positioning System	⭐️ ⭐️
Day 21: Monkey Math	⭐️ ⭐️