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grid 4 graph 3 calculation 2 set 2 bitwise 1 connectivity 1 dynamic-programming 1 map 1 optimization 1 pathfinding 1 physics 1 random-access 1 recursion 1 sequence 1 simulation 1 sliding-window 1 traversal 1
| Day | Title | Difficulty | Tags | Source |
|---|---|---|---|---|
| 1 | Sonar Sweep | 🟢 | sequence, sliding-window | day_01.ex |
| 2 | Dive! | 🟢 | grid | day_02.ex |
| 3 | Binary Diagnostic | 🟡 | calculation | day_03.ex |
| 4 | Giant Squid | 🟡 | grid, optimization, random-access | day_04.ex |
| 5 | Hydrothermal Venture | 🟢 | set | day_05.ex |
| 6 | Lanternfish | 🟡 | map | day_06.ex |
| 7 | The Treachery of Whales | 🟢 | calculation | day_07.ex |
| 9 | Smoke Basin | 🟠 | connectivity, graph, grid | day_09.ex |
| 12 | Passage Pathing | 🟠 | graph, pathfinding, recursion, traversal | day_12.ex |
| 15 | Chiton | 🔴 | graph | day_15.ex |
| 16 | Packet Decoder | 🟠 | bitwise | day_16.ex |
| 17 | Trick Shot | 🟠 | physics, simulation | day_17.ex |
| 21 | Dirac Dice | 💀 | dynamic-programming | day_21.ex |
| 25 | Sea Cucumber | 🟠 | grid, set | day_25.ex |