My solutions to Advent Of Code 2025 implemented in Rust. The development environment is VS Code and Windows.
Simple modulo arithmetic. Other than getting those annoying boundary conditions right, it was not much of a challenge.
Trivial
Trivial. I hope these start getting harder. There are only 12 days this year.
Still trivial.
I didn't know that sort_by_key can be used on a vector of tuples.
Yawn. I considered loading the data into a matrix and transposing, but it was easier to just process it the naive way.
I think this one was easy because AoC has trained me to expect a solution that doesn't require enumeration.