AdventOfCode

This repository contains my Advent of Code (AoC) solutions, written in Swift.

How to use the code

1. Download and install Xcode, for example from the Mac App Store.
2. Clone this repository and double-click on the Package.swift file. An Xcode workspace should open.

The directory structure is based on the years and days of AoC. There are seperate targets for certain reusable components such as the intcode machine.

Running all tests

For all the AoC problems I have solved so far, there is a unit test included to verify that the solution is still working.

Most of the solutions were written using test-driven development (TDD), so there are also lots of additional tests for the subcomponents of the solutions.

To run the tests:

swift test

Running code for a specific problem

There is a CLI runner for the puzzle solutions.

To run a solution: swift run advent<year> day<day> part<1 or 2>

swift run advent2019 day1 part1
swift run advent2019 day1 part2

swift run advent2019 day2 part1
swift run advent2019 day2 part2

swift run advent2020 day3 part1
swift run advent2020 day3 part2

swift run advent2021 day4 part1
swift run advent2021 day4 part2

# You get the idea

Running an intcode interpreter

swift run intcodecli
Please enter an intcode program > 3,0,4,0,99
Please enter input > 42
Output: 42

Project structure

This project is a Swift package containing a number of different targets and executables.

Each AoC year gets a library target (such as AdventOfCode2019) and a runner (such as Advent2019). Both of these also have a matching unit test target.