this post was submitted on 03 Dec 2023
94 points (92.7% liked)
Advent Of Code
770 readers
1 users here now
An unofficial home for the advent of code community on programming.dev!
Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.
AoC 2023
Solution Threads
M | T | W | T | F | S | S |
---|---|---|---|---|---|---|
1 | 2 | 3 | ||||
4 | 5 | 6 | 7 | 8 | 9 | 10 |
11 | 12 | 13 | 14 | 15 | 16 | 17 |
18 | 19 | 20 | 21 | 22 | 23 | 24 |
25 |
Rules/Guidelines
- Follow the programming.dev instance rules
- Keep all content related to advent of code in some way
- If what youre posting relates to a day, put in brackets the year and then day number in front of the post title (e.g. [2023 Day 10])
- When an event is running, keep solutions in the solution megathread to avoid the community getting spammed with posts
Relevant Communities
Relevant Links
Credits
Icon base by Lorc under CC BY 3.0 with modifications to add a gradient
console.log('Hello World')
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Day one really got me with those pesky overlapping words like
eightwo
ortwone
.Today was actually really easy the way I did it.
I searched through all the characters of the lines and when I got one that wasn't a number or a period, I looked at all the 8 places around to find the numbers. The numbers I completed by looking in both directions until I got a non-number.
Then I put all numbers and their starting positions in an array, deleted the duplicates and summed them.
By doing this, question 2 only took me 4 minutes.
Yeah it looks like the better solutions generally took that route. I convinced myself that the symbols were going to all have different rules in part 2, so ended up thinking about it way too hard for day 3 ๐
Thought so too, but for me it was a simple match statement (rust), which then became a glorified if statement. ๐
Hmm, I did it the opposite. Found every number and passed a list of every adjacent position of the number to check for non-digit/dot/non-whitespace.
Took a bit longer to solve part 2 due to that approach though.
In that case I was kinda lucky.
But it looked more second-partly to do it that way. ๐