hbiede / AoC-2021

My solutions for the 2021 edition of Advent of Code

AoC-2021

Advent of Code Solutions for 2021 in Rust.

Highlights:

Favorite problems:

• [Day 8]: The second star of this day (7-segment decoding) was a bit tricky, but a unique problem I don't frequently face.
• [Day 12]: The modified DFS was pretty fun to think through.

Interesting approaches:

• [Day 6]: Gotta love a good memoization problem

Leaderboard appearances:

Stats

Day	Part 1 Time (Rank)	Part 2 Time (Rank)
1	12:01:01 (67084)	12:04:18 (67084)
2	00:14:47 ( 8741)	00:17:26 ( 8741)
3	00:17:07 ( 6083)	00:57:45 ( 6083)
4	01:21:50 ( 7726)	01:24:40 ( 7726)
5	00:15:50 ( 1712)	00:49:02 ( 1712)
6	00:07:42 ( 1898)	00:38:18 ( 1898)
7	00:10:58 ( 4963)	00:48:52 ( 4963)
8	00:11:09 ( 2427)	01:10:57 ( 2427)
9	00:18:13 ( 4231)	00:30:30 ( 4231)
10	00:09:42 ( 1455)	00:22:29 ( 1455)
11	✅	✅
12	✅	✅
13	✅	✅
14	✅	✅
15	✅	✅
16	✅	✅
17	✅	✅
Avg	10:46:22 (22182)	11:00:15 (21178)

Note: After spending a lot of time on day 16 and not finishing part 1, I took an open source solution and modified it.

Note: Times are from time of challenge release, not start time to completion time

Other Years' Solutions

List of Advent of Code Repos

Scripting initially based on a script from Ullaakut. Expanded upon and fixed by HBiede

Makefile Automation

• Automatically downloads the challenge and input for the day (e.g.: make download DAY=03)
  • In order to use this target, you need to specify your session cookie from adventofcode.com in cookies.txt through the usage of make cookie SESSION={Insert your session cookie here}.
  • Parses the challenge into a markdown file (adds Markdown style headers and code blocks).
• Setup the new day's source file from a template file while downloading the input and challenge per above (e.g.: make DAY=03)
• Create the stats table above by calling make stats
  • May require calling pip3 install -r requirements.txt to ensure you have all the necessary python dependencies