Matthew Exley

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76 Following
84 Posts
is this thing on?

I just completed "Movie Theater" - Day 9 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/9

Needed a *lot* of help to get there and I'm using the dumbest inside/outside test possible. Just a relief to grind my way to the end if I'm honest.

Day 9 - Advent of Code 2025

I just completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/8

Another day where I needed help to understand the *question* but the answer was All My Own Work. Part 2 hampered by my poor termination conditions but a quick rework this morning sorted it.

Day 8 - Advent of Code 2025

I just completed "Laboratories" - Day 7 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/7

Part 2's Combinatorial Trap avoided with the ugliest "just ignore all the wrong numbers and give me the biggest as my final answer" for part 2. Code's quick, just stupid ;-)

Day 7 - Advent of Code 2025

I just completed "Trash Compactor" - Day 6 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/6

Catching up after a weekend break. Not a maths problem, a parsing problem. And then an extended index-counting session. More lessons in examining ALL the data before starting!

Day 6 - Advent of Code 2025

I just completed "Cafeteria" - Day 5 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/5

YES! Correct optimisation to solve Part1 makes Part2 trivial to complete. Sometimes a bit of experience helps a lot (i.e. "I've done this before, I bet I can guess what's coming next")

(can't think of a good visualisation for today though... unless you plot a bitmap for part 1 showing fresh vs spoiled? Eh. Dull)

Day 5 - Advent of Code 2025

Did the Visualisation thing. Starts great, ends up a bit dull if we're honest
https://www.guided-naafi.org/aoc/2025/12/04/AOC2025Visualisations.html
Advent Of Code 2025 - Answer Visualisations

I’ll just update the one post this year. If I do more visualisations that is

Things Of Fleeting Interest

I just completed "Printing Department" - Day 4 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/4

Grow the border, count the values. Then turn it into an iteration. That was a really fun game, I need to go back and do a visualisation!

Day 4 - Advent of Code 2025

I just completed "Lobby" - Day 3 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/3

Part 2 turned into "revenge of the off-by-one error" but isn't that always the case with array indexing? Fun.

Day 3 - Advent of Code 2025

I just completed "Gift Shop" - Day 2 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/2

I am a dirty, dirty programmer who thinks Strings are the Thing and who doesn't even use Python properly to generate them.

But I got the result....

Day 2 - Advent of Code 2025

I just completed "Secret Entrance" - Day 1 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/1

(mostly just because my lad is doing it and I can't leave well enough alone). Clock arithmetic and some interesting corner cases on when a transition past zero is made. Fun, but a little frustrating.

Day 1 - Advent of Code 2025