Advent of Code is an Advent calendar of small programming puzzles for a variety of skill levels that can be solved in any programming language you like. People use them for interview prep, company training, university coursework, practice problems, a speed contest, or to challenge each other.
You don't need a computer science background to participate - just a little programming knowledge and some problem-solving skills will get you pretty far. Nor do you need a fancy computer; every problem has a solution that completes in at most 15 seconds on ten-year-old hardware.
@Eric Wastl
Performance measured with Hyperfine (3 warm-ups, file I/O and parsing included). Input used is the real puzzle input, not the example.
| Day | Part #1 Performance | Part #2 Performance |
|---|---|---|
| #01 Secret Entrance | 195.9 ms ± 3.9 ms | 202.6 ms ± 4.3 ms |
| #02 Gift Shop | 1.733 s ± 0.096 s | 1.661 s ± 0.027 s |
| #03 Lobby | 203.6 ms ± 14.9 ms | 202.9 ms ± 6.9 ms |
| #04 Printing Department | 212.8 ms ± 3.2 ms | 503.9 ms ± 36.7 ms |
| #05 Cafeteria | 200.0 ms ± 3.6 ms | NA |
| #06 Trash Compactor | 203.6 ms ± 8.2 ms | NA |
| #07 Laboratories | 234.7 ms ± 9.4 ms | NA |
| #08 Playground | 456.8 ms ± 10.7 ms | 470.0 ms ± 20.1 ms |
| #09 Movie Theater | 200.0 ms ± 3.6 ms | NA |
| #10 Light Machine | 224.4 ms ± 6.4 ms | NA |
| #11 Reactor | 200.5 ms ± 4.2 ms | NA |
| #12 Christmas Tree Farm | 201.0 ms ± 3.2 ms | NA |
| Day | Part #1 Performance | Part #2 Performance |
|---|---|---|
| #01 Historian Hysteria | 62.7 ms ± 9.8 ms | 79.3 ms ± 12.0 ms |
| #02 Red-Nosed Reports | 69.7 ms ± 5.7 ms | 100.7 ms ± 32.7 ms |
| #03 Mull It Over | 69.0 ms ± 7.3 ms | 69.4 ms ± 7.5 ms |
| #04 Ceres Search | 87.8 ms ± 20.9 ms | 69.3 ms ± 8.0 ms |
| #05 Print Queue | 185.7 ms ± 77.7 ms | 680.6 ms ± 46.8 ms |
| #06 Guard Gallivant | 93.6 ms ± 61.3 ms | NA |
| #07 Bridge Repair | 325.7 ms ± 63.8 ms | 10.259 s ± 0.430 s |
| #08 Resonant Collinearity | 69.6 ms ± 16.7 ms | 68.1 ms ± 7.8 ms |
| #09 Disk Fragmenter | 117 s ± 0.3 s | 117 s ± 0.431 s |
| #10 Hoof It | 93.0 ms ± 2.8 ms | 93.7 ms ± 3.0 ms |
| #11 Plutonian Pebbles | 69.2 ms ± 6.0 ms | 374.6 ms ± 93.0 ms |
| #12 Garden Groups | 93.6 ms ± 3.7 ms | NA |
| #13 Claw Contraption | 539.1 ms ± 19.2 ms | 89.6 ms ± 33.7 ms |
| #14 Restroom Redoubt | 96.7 ms ± 30.0 ms | 6.258 s ± 0.555 s |
| #15 Warehouse Woes | 761.0 ms ± 144.7 ms | NA |
| #16 Reindeer Maze | 228.5 ms ± 76.9 ms | NA |
| #17 Chronospatial Computer | 109.4 ms ± 47.2 ms | NA |
| #18 RAM Run | 109.6 ms ± 32.7 ms | NA |
| #19 Linen Layout | 702.0 ms ± 86.0 ms | 1.326 s ± 0.134 s |
| #20 Race Condition | 156.2 ms ± 64.7 ms | 6.078 s ± 0.231 s |
| #21 Keypad Conundrum | NA | NA |
| #22 Monkey Market | 1.459 s ± 0.253 s | NA |
| #23 LAN Party | 77.2 ms ± 21.9 ms | 93.1 ms ± 22.4 ms |
| #24 Crossed Wires | 81.6 ms ± 20.5 ms | NA |
| #25 Code Chronicle | 167.7 ms ± 41.4 ms | NA |