2015

Advent of Code 2015

Day	Fun	Difficulty	Task Description
1	★★★☆☆	★☆☆☆☆	count braces
2	★★★★☆	★★☆☆☆	compute surface area of boxes
3	★★★★☆	★☆☆☆☆	count visited cells in a 2D grid
4	★★★☆☆	★☆☆☆☆	compute 4 million MD5 hashes
5	★★☆☆☆	★★☆☆☆	regular expression matching
6	★★★☆☆	★★☆☆☆	1Kx1K 2D grid manipulation
7	★★★★☆	★★☆☆☆	simulate 350 logical gates
8	★★☆☆☆	★★☆☆☆	string escaping and unescaping
9	★★★☆☆	★★★☆☆	8-node travelling salesman problem
10	★★☆☆☆	★★★☆☆	run-length encoding
11	★★☆☆☆	★★☆☆☆	count with letters and check various rules
12	★★☆☆☆	★★☆☆☆	JSON document tree traversal
13	★★★★☆	★★★☆☆	optimization over 9-element permutations
14	★★★☆☆	★★★☆☆	race simulation
15	★★★★☆	★★★☆☆	optimization over 100-item-across-4-classes selection
16	★★★★☆	★★☆☆☆	match a template over 500 incomplete data sets
17	★★☆☆☆	★★☆☆☆	21-item permutation with constraints
18	★★★★☆	★★☆☆☆	100x100 2D cellular automaton
19	★★☆☆☆	★★★★☆	recursive replacement BFS
20	★★☆☆☆	★★★☆☆	sum-of-divisors search on 6-digit numbers
21	★★☆☆☆	★★★☆☆	turn-based battle simulation
22	★☆☆☆☆	★★★☆☆	turn-based battle simulation
23	★★★★☆	★☆☆☆☆	CPU simulation
24	★★☆☆☆	★★★★☆	28-item knapsack problem
25	★★★★☆	★★☆☆☆	2D zig-zag coordinate decoding