Day 25: Full of Hot AirDay 24: Blizzard BasinDay 23: Unstable DiffusionDay 22: Monkey MapDay 21: Monkey MathDay 20: Grove Positioning SystemDay 19: Not Enough MineralsDay 18: Boiling BouldersDay 17: Pyroclastic FlowDay 16: Proboscidea VolcaniumDay 15: Beacon Exclusion ZoneDay 14: Regolith ReservoirDay 13: Distress SignalDay 12: Hill Climbing AlgorithmDay 11: Monkey in the MiddleDay 9: Rope BridgeDay 8: Treetop Tree HouseDay 7: No Space Left On DeviceDay 6: Tuning TroubleDay 5: Supply StacksDay 4: Camp CleanupDay 3: Rucksack ReorganizationDay 2: Rock Paper ScissorsDay 1: Calorie CountingAdvent of Code Leaderboard
Day 10: Cathode-Ray Tube
cycles = d3.map(run(program), (sprite, cycle) => {
const position = (cycle - 1) % 40;
return {
cycle,
position,
crt: sprite - 1 <= position && position <= sprite + 1
};
}).slice(1)
part1 = d3.sum(signal(program), ([i, x]) => i * x)
d3.map(signal(program), ([i, x]) => [i, x])
function* signal(program) {
let i = 0;
for (const X of run(program)) {
if (i === 20 || ((i - 20) % 40 === 0))
yield [i, X];
i++;
}
}
function* run(program) {
let X = 1;
yield X;
for (const instruction of program) {
const [op, arg] = instruction.split(" ");
switch (op) {
case "noop":
yield X;
break;
case "addx":
yield X;
yield X;
X += +arg;
break;
}
}
}
program = data.trim().split("\n")
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