this post was submitted on 16 Dec 2024
29 points (91.4% liked)

Advent Of Code

980 readers
20 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 2024

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

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
 
top 4 comments
sorted by: hot top controversial new old
[โ€“] Deebster 7 points 5 days ago

The main thing I remember about Dijkstra's algorithm was that at uni when we coded it up in the lab my version had a bug where a certain node was always 0, so I just left the mouse cursor on top of that mode when I demoed it - got full marks ๐Ÿค“

[โ€“] Gobbel2000 3 points 5 days ago (1 children)

Dijkstra's algorithm can fairly simply be modified to work for part 2. In the relaxation step you just need to also handle the case that the distances of two joining paths are equal.

[โ€“] [email protected] 2 points 5 days ago

I did try that at first, but it didn't really work the way I wanted it to. That's probably also because our implementation from school was a bit odd.

[โ€“] [email protected] 2 points 5 days ago

BFS is Dijkstra with a queue instead of a heap ๐Ÿคทโ€โ™‚๏ธ