View Interactive Visualizations
# Build entire solution
dotnet build AdventOfCode_2025.sln
# Run a specific day
dotnet run --project Day01 -- Day01/problem.txt| Folder | Description |
|---|---|
| Day00 | Shared utilities library |
| Day01+ | Daily puzzle solutions |
| Day | Puzzle | Solution |
|---|---|---|
| 1 | Secret Entrance | Day01 |
| 2 | Gift Shop | Day02 |
| 3 | Lobby | Day03 |
| 4 | Printing Department | Day04 |
| 5 | Cafeteria | Day05 |
| 6 | Trash Compactor | Day06 |
| 7 | Laboratories | Day07 |
| 8 | Playground | Day08 |
| 9 | Movie Theater | Day09 |
| 10 | Assembly Line | Day10 |
| 11 | Reactor Graph | Day11 |
| 12 | Christmas Tree Farm | Day12 |
Interactive polyomino packing visualizer - click regions to solve and see color-coded shape placements:
Paths from you/svr to out through required waypoints are highlighted; node colors follow the legend from Day11/visualize.html.
Kruskal's algorithm connects 1000 junction boxes by shortest distance, forming circuits colored by size (red=largest, green=2nd, blue=3rd):
Beams propagate downward and split at each ^ splitter, branching left and right:
Final grid state after removing all accessible paper rolls (white = remaining rolls, black = empty):
| File | Description |
|---|---|
| ReadInputs.cs | Span-based input parsing from files or stdin |
| ReadInputExtensions.cs | Convenience methods for reading integers, records |
| Grid.cs | 2D grid with neighbor traversal, BFS, region detection |
| GridRenderExtensions.cs | Grid rendering including bitmap export |
| Node.cs | Grid node with position, value, distance, visited state |
| SimulationGrid.cs | Sparse grid for simulations with viewport rendering |
| Graph.cs | Generic graph with pathfinding |
| Line.cs | 2D line segment with path enumeration |
| CircularRange.cs | Circular number range with zero-crossing tracking |
| CircularEnumerable.cs | Infinitely repeating sequence |
| EnumerableExtensions.cs | Collection helpers (SplitToInts, Second, Third, etc.) |
| CombinatoricsEnumerableExtensions.cs | Permutations, combinations |
| StringParsingExtensions.cs | ParseInt, ParseIntegers, ParseLongs |
| ArrayExtensions.cs | Array utilities |
| RenderExtensions.cs | Fluent .ToConsole() for output |
| Cards.cs | Playing card utilities |
| EnumerableTuples.cs | Tuple enumeration helpers |
2025 Advent of Code Solutions in C#