Advent of Code 2024

Language of the Year: Java

Java Version is 23 , to include Tuples and Pattern Match on Type

Problem		1	2
Day 1: Historian Hysteria	Simple Array ops	*	*
Day 2: Red-Nosed Reports	Array Manipulation	*	*
Day 3: Mull It Over	Regexs	*	*
Day 4: Ceres Search	Search 2D Array	*	*
Day 5: Print Queue	List re-ordering	*	*
Day 6: Guard Gallivant	Grid Path Tracing	*	*
Day 7: Bridge Repair	State Search	*	*
Day 8: Resonant Collinearity	Vector Math	*	*
Day 9: Disk Fragmenter	Simple Defragmenation	*	*
Day 10: Hoof It	State Search	*	*
Day 11: Plutonian Pebbles	Automata required Optimization	*	*
Day 12: Garden Groups	Flood Fill/Perimeter Walk	*	*
Day 13: Claw Contraption	Linear Algebra	*	*
Day 14: Restroom Redoubt	Automata & Guesswork	*	*
Day 15: Warehouse Woes	2D Simulation Move/Hitbox	*	*
Day 16: Reindeer Maze	Dijkstra's with Extra Steps	*	*
Day 17: Chronospatial Computer	ASM Reverse Engineering	*	*
Day 18: RAM Run	Dijkstra's with Extra Steps	*	*
Day 19: Linen Layout	String Manipulation/Memoization	*	*
Day 20: Race Condition	Dijkstra's with Extra Steps	*	*
Day 21: Keypad Conundrum	Coordinate Mapping Cubed	*	*
Day 22: Monkey Market	Maths	*	*
Day 23: LAN Party	Graph Cliques	*	*
Day 24: Crossed Wires	Ciruit Simulation/Binary Stuff	*	*
Day 25: Code Chronicle	Array Manipulation	*	*

I haven't worked with Java in over a decade. So my style will at best be outdated. Don't expect this code to be idiomatic, modern, or good.

Slow Days that should be reviewed to speed up

day	time (both parts)	new/improved time
Day 6: Guard Gallivant	1611.9ms
Day 9: Disk Fragmenter	461.3ms
Day 16: Reindeer Maze	545.2ms
Day 22: Monkey Market	1800.4ms