Advent of Code

Personal solutions for Advent of Code, all implemented in Go.

The goal is to practice programming and problem-solving habits while keeping each day's solution self-contained and easy to revisit later.

It uses pure Go, no external dependencies.

Requirements

Go 1.25
Puzzle input

Repository Structure

yyyy/
├── dayXX/
│   ├── main.go      # The main code to run to print solutions.
│   ├── main_test.go # The test file that validates the logic.
│   └── input.txt    # The day's puzzle input.
└── ...

Each day's code can be run with:

cd yyyy/dayXX
go run main.go

Expected output:

Part 1: <answer>
Part 2: <answer>

Tests

In the Advent of Code, every day the logic is explained with a sample result, like this:

For example:

1abc2
pqr3stu8vwx
a1b2c3d4e5f
treb7uchet

In this example, the calibration values of these four lines are 12, 38, 15, and 77.

Adding these together produces 142.

I'm using these examples to validate my logic.

If you want to run those, you can use:

cd dayXX
go test

Notes

Happy coding, and good luck on the puzzles!