README.md

Advent of Code 2021

Day	Fun	Difficulty	Task Description
1	★★★★☆	★☆☆☆☆	3-tap box lowpass filter
2	★★★★☆	★☆☆☆☆	2D route interpretation
3	★★★☆☆	★★☆☆☆	majority votes and bit manipulation
4	★★★☆☆	★★☆☆☆	bingo game simulation
5	★★★★☆	★★☆☆☆	45-degree line drawing
6	★★★☆☆	★★★☆☆	exponential growth simulation
7	★★★☆☆	★★☆☆☆	simple optimization problem
8	★★★★☆	★★★☆☆	logical deduction puzzle
9	★★★☆☆	★★★☆☆	flood fill / connected components
10	★★★☆☆	★★☆☆☆	stack checking
11	★★★☆☆	★★★☆☆	cellular automaton simulation
12	★★☆☆☆	★★★☆☆	graph search
13	★★★★☆	★★☆☆☆	2D coordinate reflections
14	★★☆☆☆	★★★★☆	exponential growth simulation
15	★★☆☆☆	★★★★☆	path finding
16	★★★☆☆	★★★☆☆	protocol parsing
17	★★★☆☆	★★★☆☆	ballistic trajectory simulation
18	★★☆☆☆	★★★☆☆	nested list processing
19	★★★☆☆	★★★★★	fuzzy set matching and 3D vector math
20	★★★☆☆	★★★☆☆	arbitrary 2D cellular automaton simulation
21	★★★☆☆	★★★★★	game simulation with dynamic programming
22	★★★★☆	★★★★☆	cuboid intersection
23	★★★☆☆	★★★★★	Towers of Hanoi like game solver
24	★★☆☆☆	★★★★★	reverse engineering
25	★★★☆☆	★★★☆☆	dual 2D cellular automata