Solutions to Advent of Code 2021

These are my solutions to the (ongoing) 2021 Advent of Code challenge.

Setup

1. Install NodeJS 16 or later (if unsure, select the LTS version here).
2. Clone this repository to a folder.
3. Open a terminal / command prompt and run npm install.

Running

• Through the command line:
  • Run all solutions: npm run all.
  • Run a specific day: npm run dayD where D is a day number starting from 1.
  • Run a specific part: npm run dayD:partP where D is a day number and P is 1 or 2.
  • Run a challenge: npm run dayD:challenge:C where D is a day number and C is a challenge number.
• Through WebStorm IDE:
  • Select the desired day and part from the "run" menu at the top right, then press the green "play" button.

Daily Solutions

Day	Name	Notes	Part 1	Part 2
1	Sonar Sweep	Notes	Part 1	Part 2
2	Dive!	Notes	Part 1	Part 2
3	Binary Diagnostic	Notes	Part 1	Part 2
4	Giant Squid	Notes	Part 1	Part 2
5	Hydrothermal Venture	Notes	Part 1	Part 2
6	Lanternfish	Notes	Part 1	Part 2
7	The Treachery of Whales	Notes	Part 1	Part 2
8	Seven Segment Search	Notes	Part 1	Part 2
9	Smoke Basin	Notes	Part 1	Part 2
10	Syntax Scoring	Notes	Part 1	Part 2
11	Dumbo Octopus	Notes	Part 1	Part 2
12	Passage Pathing	Notes	Part 1	Part 2
13	Transparent Origami	Notes	Part 1	Part 2
14	Extended Polymerization	Notes	Part 1	Part 2
15	Chiton	Notes	Part 1	Part 2
16	Packet Decoder	Notes	Part 1	Part 2

Challenge Solutions

Challenge	Day	Part	Level	Notes	Solution
AOC 2021 Big Inputs (Big Boys)	4	*	900-15	Notes	Solution
AOC 2021 Big Inputs (Big Boys)	4	*	3600-30	Notes	Solution
AOC 2021 Big Inputs (Big Boys)	5	*	20000-6400	Notes	Solution
AOC 2021 Big Inputs (Big Boys)	5	*	50000-10000	Notes	Solution
AOC 2021 Big Inputs (Big Boys)	6	2	9999999	Notes	Solution