# Advent of Code 2024

This repository contains my solutions for the [Advent of Code 2024](https://adventofcode.com/2024) challenges.

## Languages

I am using C# for this year's challenge again.

## Structure

Each day's solution is contained in a separate folder. Each folder contains:

- A PROBLEM.md file containing the problem description.
- A INPUT.txt file containing the input for the problem.
- A dotnet console application containing the solution.
- An TUnit test project containing unit tests for the solution.

### Prequesties

- [.NET 9.0](https://dotnet.microsoft.com/download/dotnet/9.0)

### Running the Solutions

To run the solutions, navigate to the solution folder and run the following command:

```bash
dotnet run -- <path-to-input-file>
```

Or for part 2 solutions

```bash
dotnet run -- <path-to-input-file> part2
```

You can also build the projects and run the executables directly.

```bash
dotnet build ./bin/Debug/net9.0/<project-name> <path-to-input-file>
```

## Challenges

| Day | Problem                    | Solution                               | Notes                                                                                                  |
|-----|----------------------------|----------------------------------------|--------------------------------------------------------------------------------------------------------|
| 01  | [Problem](./01/PROBLEM.md) | [Solution](./01/HistorianHysteria/)    | A great way to start!                                                                                  |
| 02  | [Problem](./02/PROBLEM.md) | [Solution](./02/RedNosedReports/)      | Damn their was an edge case that really bit me...direction change after first pair of levels           |
| 03  | [Problem](./03/PROBLEM.md) | [Solution](./03/MullItOver/)           | Thank goodness this wasn't a repeat of day 2.                                                          |
| 04  | [Problem](./04/PROBLEM.md) | [Solution](./04/CeresSearch/)          | This was fun! Definitely was able to see the growth in my abilities here.                              |
| 05  | [Problem](./05/PROBLEM.md) | [Solution](./05/PrintQueue/)           | A graph to the rescue!                                                                                 |
| 06  | [Problem](./06/PROBLEM.md) | [Solution](./06/GuardGallivant/)       | I kind of brute forced part two...                                                                     |
| 07  | [Problem](./07/PROBLEM.md) | [Solution](./07/BridgeRepair/)         | Not perfect or pretty, but good enough                                                                 |
| 08  | [Problem](./08/PROBLEM.md) | [Solution](./08/ResonantCollinearity/) | Without some help from chat I don't know where I'd be...to be fair the description kind of mislead me. |
| 09  | [Problem](./09/PROBLEM.md) | [Solution](./09/DiskFragmenter/)       | Doing things with indexes is error prone.                                                              |
| 10  | [Problem](./10/PROBLEM.md) | [Solution](./10/HoofIt/)               | I recognized the solution for this based on pattern from last year. Solved using BFS.                  |
| 11  | [Problem](./11/PROBLEM.md) | [Solution](./11/PlutonianPebbles/)     | Dictionary > List                                                                                      |
| 12  | [Problem](./12/PROBLEM.md) | [Solution](./12/GardenGroups/)         | CORNERS == SIDES                                                                                       |
| 13  | [Problem](./13/PROBLEM.md) | [Solution](./13/ClawContraption/)      | Yay for algebra                                                                                        |
| 14  | [PROBLEM](./14/PROBLEM.md) | [Solution](./14/RestroomRedoubt/)      | Part 2 is not as complicated as you think. The answer is using the safety factor                       |
| 15  | [PROBLEM](./15/PROBLEM.md) | [Solution](./15/WarehouseWoes/)        | This breaks my previous star record!                                                                   |