Advent of Code 2024 Day 5 (BaseA Style)

[AlteryxCommunityTeam]

Discussion thread for day 5 of the Advent of Code - https://adventofcode.com/2024/day/5

[Blake_E]

Was really overthinking the resort in part 2 and then think I stumbled into some dumb luck while exploring the data.

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[afv2688]

First iterative one

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[SeanAdams]

a sorta-brute-force solution - almost like a sorting algorithm

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Part 1:
- Split the string at each point - breaking it into a left; current and right
- join this to the rules table (which is a before and after value)
- if the offensive value appears in the left part, then this particular combination fails
- Roll this up by report ID

Part 2:
in a loop:
- swap the before and after values that broke a rule
- check using the part 1 macro
- process the ones that are still failing


Main Canvas:

Checker:

Iterative Fixer:

Python code for Day 5:

All code at SeanAdams10/AdventOfCodePython: Advent of code challenges in Python - across multiple years

[estherb47]

Part 1 was easy for me to understand. Part 2 not so much, but got through

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This one is all about pattern recognition. Part one solved by matches and simple math. If the total number of matching rules equals the total number of combinations of numbers, then it's a match.

Part 2, we only look at the manuals that fail the first test. Then count the number of commas in each manual and divide by two. If the number of rules that apply to each manual equals half the number of commas, that's the number that will be in the middle.

Nothing unique to mine after looking at other solutions

[Qiu]

Late post.

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[BS_THE_ANALYST]

Awesome. Little bit of thought needed for part 2 for the tactic. 

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[aiahwieder]

Still stuck on 1 star . . . might come back for it later (HA HA)

[Kenda]

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[mkeiffer]

My AoC Day 5 solution!

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[CailinS]

another fun one - a real brain twister, even for part one. which is all I got to this time around.

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