Public
Edited
Dec 11, 2022
elves = (await FileAttachment("input1.txt").text())
.split("\n\n")
.map((elf) => elf.split("\n"))
sums = elves.map((elf) => {
return d3.sum(elf);
})
maxCalories = Math.max(...sums)
top3Calories = d3.sum(sums.sort((a, b) => b - a).slice(0, 3))
rounds = (await FileAttachment("input2.txt").text())
.split("\n")
.map((round) => round.split(" "))
points = calculatePoints(rounds)
calculatePoints = (rounds) => {
let pts = 0;
rounds.forEach(([opponentChoice, desiredOutcome]) => {
if (desiredOutcome === "X") {
// lose
pts += 0;
if (opponentChoice === "A") {
// opponent chooses rock, so I choose scissors (3 points)
pts += 3;
} else if (opponentChoice === "B") {
// opponent chooses paper, so I choose rock
pts += 1;
} else if (opponentChoice === "C") {
// opponent chooses scissor, so I choose paper
pts += 2;
}
} else if (desiredOutcome === "Y") {
// draw
pts += 3;
if (opponentChoice === "A") {
// opponent chooses rock, choose same as opponent
pts += 1;
} else if (opponentChoice === "B") {
// opponent chooses paper, choose same as opponent
pts += 2;
} else if (opponentChoice === "C") {
// opponent chooses scissor, choose same as opponent
pts += 3;
}
} else if (desiredOutcome === "Z") {
// win
pts += 6;
if (opponentChoice === "A") {
// opponent chooses rock, so I choose paper
pts += 2;
} else if (opponentChoice === "B") {
// opponent chooses paper, so I choose scissor
pts += 3;
} else if (opponentChoice === "C") {
// opponent chooses scissor, so I choose rock
pts += 1;
}
}
});
return pts;
}
lines = (await FileAttachment("input3.txt").text())
.split("\n");
rucksacks = lines.map((rucksack) => {
const half = rucksack.length / 2;
const firstCompartment = rucksack.substring(0, half); // CjhshBJCSr
const secondCompartment = rucksack.substring(half); // TTsLwqwqwb
return [firstCompartment, secondCompartment];
});
priorityOfFirstChar = (char) => {
const firstLetter = char.substring(0, 1);
const upperCase = firstLetter === firstLetter.toUpperCase();
// a/A is char code 65
return firstLetter.charCodeAt(0) - 64;
}
priorityOfFirstChar("A")
"A".charCodeAt(0)
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