Advent of Code 🎄

Welcome to my solutions for the Advent of Code challenges! This repository contains my Java solutions for the puzzles, along with utility classes to streamline the process of solving the challenges.

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📝 About Advent of Code

Advent of Code is an annual programming event in December, where participants solve a series of holiday-themed puzzles. It is a great opportunity to:

• Sharpen programming skills 🛠️
• Explore new algorithms and data structures 🧩
• Having fun and learning new things! 🎉

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📈 Progress 2024

Mon	Tue	Wed	Thu	Fri	Sat	Sun
						Day 1 ⭐⭐
Day 2 ⭐⭐	Day 3 ⭐⭐	Day 4 ⭐⭐	Day 5 ⭐⭐	Day 6 ⭐⭐	Day 7 ⭐⭐	Day 8 ⭐⭐
Day 9 ⭐⭐	Day 10 ⭐⭐	Day 11 ⭐⭐	Day 12 ⭐⭐	Day 13 ⭐⭐	Day 14 ⭐⭐	Day 15 ⭐⭐
Day 16 ⭐⭐	Day 17 ⭐⭐	Day 18 ⭐⭐	Day 19 ⭐⭐	Day 20 ⭐⭐	Day 21 ⭐⭐	Day 22 ⭐⭐
Day 23 ⭐⭐	Day 24 ⭐⭐	Day 25 ⭐⭐

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🧠 Challenges Solved

Year	Day	Title	Difficulty
2019	1	The Tyranny of the Rocket Equation	⭐
2019	2	1202 Program Alarm	⭐⭐
2019	3	Crossed Wires	⭐⭐
2019	4	Secure Container	⭐
2019	...	...	...
2020	...	...	...
2020	13	Shuttle Search	⭐⭐⭐
2020	...	...	...
2021	1	Sonar Sweep	⭐
2021	2	Dive!	⭐
2021	3	Binary Diagnostic	⭐⭐
2021	4	Giant Squid	⭐⭐
2021	5	Hydrothermal Venture	⭐
2021	6	Lanternfish	⭐
2021	7	The Treachery of Whales	⭐
2021	8	Seven Segment Search	⭐⭐⭐
2021	9	Smoke Basin	⭐⭐
2021	10	Syntax Scoring	⭐
2021	11	Dumbo Octopus	⭐
2021	12	Passage Pathing	⭐⭐
2021	13	Transparent Origami	⭐
2021	14	Extended Polymerization	⭐⭐
2021	15	Chiton	⭐⭐
2021	16	Packet Decoder	⭐⭐⭐
2021	17	Trick Shot	⭐⭐
2021	18	Snailfish	⭐⭐⭐⭐
2021	19	Beacon Scanner	⭐⭐⭐⭐
2021	20	Trench Map	⭐⭐
2021	21	Dirac Dice	⭐⭐⭐
2022	...	...	...
2021	...	...	...
2023	1	Trebuchet?!	⭐⭐
2023	2	Cube Conundrum	⭐
2023	3	Gear Ratios	⭐⭐
2023	4	Scratchcards	⭐
2023	5	If You Give A Seed A Fertilizer	⭐⭐⭐
2023	6	Wait For It	⭐
2023	7	Camel Cards	⭐⭐
2023	8	Haunted Wasteland	⭐⭐
2023	9	Mirage Maintenance	⭐
2023	10	Pipe Maze	⭐⭐⭐⭐
2023	11	Cosmic Expansion	⭐⭐
2023	12	Hot Springs	⭐⭐⭐⭐
2023	13	Point of Incidence	⭐⭐
2023	14	Parabolic Reflector Dish	⭐⭐⭐
2023	15	Lens Library	⭐⭐
2023	16	The Floor Will Be Lava	⭐⭐
2023	17	Clumsy Crucible	⭐⭐⭐
2023	18	Lavaduct Lagoon	⭐⭐⭐⭐
2023	19	Aplenty	⭐⭐
2023	20	Pulse Propagation	⭐⭐⭐⭐
2023	21	Step Counter	⭐⭐⭐⭐⭐
2023	22	Sand Slabs	⭐⭐⭐
2023	23	A Long Walk	⭐⭐⭐⭐
2023	24	Never Tell Me The Odds	⭐⭐⭐⭐
2023	25	Snowverload	⭐⭐⭐⭐
2024	1	Historian Hysteria	⭐
2024	2	Red-Nosed Reports	⭐⭐
2024	3	Mull It Over	⭐⭐
2024	4	Ceres Search	⭐⭐
2024	5	Print Queue	⭐
2024	6	Guard Gallivant	⭐⭐
2024	7	Bridge Repair	⭐⭐⭐
2024	8	Resonant Collinearity	⭐⭐
2024	9	Disk Fragmenter	⭐⭐⭐
2024	10	Hoof It	⭐⭐⭐
2024	11	Plutonian Pebbles	⭐⭐
2024	12	Garden Groups	⭐⭐⭐⭐
2024	13	Claw Contraption	⭐⭐⭐
2024	14	Restroom Redoubt	⭐⭐⭐
2024	15	Warehouse Woes	⭐⭐⭐⭐
2024	16	Reindeer Maze	⭐⭐⭐⭐
2024	17	Chronospatial Computer	⭐⭐⭐⭐⭐
2024	18	RAM Run	⭐⭐⭐
2024	19	Linen Layout	⭐⭐
2024	20	Race Condition	⭐⭐⭐⭐
2024	21	Keypad Conundrum	⭐⭐⭐⭐⭐
2024	22	Monkey Market	⭐⭐⭐⭐
2024	23	LAN Party	⭐⭐⭐
2024	24	Crossed Wires	⭐⭐⭐⭐⭐⭐
2024	25	Code Chronicle	⭐⭐⭐⭐

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📂 Repository Structure

Each day of the challenge is organized into its own directory:

Advent-of-Code/src/main/java/nl/jtepoel/AOC
├───Main.java
│
├───utils
│       Edge.java
│       FrequencySet.java
│       FrequencySetLong.java
│       Graph.java
│       Grid.java
│       Node.java
│       Option.java
│       Pair.java
│       Point.java
│       Quad.java
│       Triple.java
│       Utils.java
│
├───year2019
│   ├───day1
│   │       example.txt
│   │       input.txt
│   │       Main.java
│   │
│   ├───day2
│   │       example.txt
│   │       input.txt
│   │       Main.java
│
├───year----
...

The structure includes:

• Input.txt: Puzzle input for the day.
• Example.txt: Example input for the day.
• Main.java: Java implementation of the solution.

The utils folder contains utility classes that simplify common tasks during Advent of Code:

🔧 Utility Classes:

• Graph.java: Implements graph data structures and algorithms like BFS/DFS.
• Edge.java: Represents edges in graph-based problems.
• Node.java: Represents nodes in graph-based problems.
• Grid.java: Provides helper methods to navigate and manipulate 2D grids.
• Point.java: Represents coordinates or positions in a grid.
• Pair.java: Represents a pair of elements.
• Triple.java: Represents a triple of elements.
• Quad.java: Represents a quadruple of elements.
• FrequencySet.java: A set that keeps track of the frequency of elements.
• FrequencySetLong.java: A set that keeps track of the frequency of elements (long version).
• Option.java: Represents an optional value.
• Utils.java: A helper class to streamline creating new challenge days by setting up files and directories.

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🚀 Getting Started

📋 Prerequisites

To run and build this project, you'll need the following:

• Java Development Kit (JDK) 22 or higher
• Maven: A build automation and dependency management tool.

</> Clone the Repository

Clone this repository using Git:

git clone https://github.com/J-a-c-c-o/Advent-of-Code.git
cd Advent-of-Code

🛠️ Build the Project

Use Maven to build the project and resolve dependencies:

mvn clean install

🌐 Token Configuration

The session token is essential to fetch your personalized puzzle input. Here’s how to set it up:

1. Log in to your Advent of Code account.
2. Open the browser’s developer tools (F12 or right-click and select Inspect).
3. Go to the Application tab.
4. Under Storage, find the Cookies section.
5. Copy the value of the session cookie.
6. Save the value in a file named token.txt in the src/main/resources directory.

Keep your session token secret and never share it publicly!

🌟 Create a New Day

To automate the process of creating a new day, you can use Main.java to generate the necessary files and directories.

Steps:

1. Ensure your token is available: follow the instructions in the Token Configuration section to set up your session token.

2. Run the Main.java class:

   mvn exec:java

   After running the class, you will be prompted to select which mode you want to run: Select create to create a new day.

   • It will:
     • Create a new directory for the day under the relevant year.
     • Fetch the input for the day's puzzle (if the token is valid).
     • Generate the necessary files, including example.txt, input.txt, and a Main.java template.

Run a Solution

Run the solution using Maven:

mvn exec:java

You will be prompted to select which mode you want to run: Select run to run the solution for a specific day.

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🌟 Acknowledgments

Big thanks to Advent of Code and its creator, Eric Wastl, for this amazing initiative. 🎉