Software Engineer
AoC 2022 Day 1: Calorie CountingAoC 2022 Day 3: Rucksack ReorganizationAoC 2022 Day 4: Camp CleanupAoC 2022 Day 5: Supply StacksAoC 2022 Day 6: Tuning TroubleAoC 2022 Day 7: No Space Left On DeviceAoC 2022: Day 8: Treetop Tree HouseAoC 2022 Day 9: Rope BridgeAoC 2022 Day 10: Cathode-Ray TubeAoC 2022 Day 11: Monkey in the MiddleAoC 2022 Day 12: Hill Climbing Algorithm
AoC 2022 Day 2: Rock Paper Scissors
input = FileAttachment("input.txt").text()
rpsRounds = input.trim().split("\n").map(round => round.split(" "))
rockValues = new Set(["A", "X"])
paperValues = new Set(["B", "Y"])
scissorsValues = new Set(["C", "Z"])
function findResult([letter1, letter2]) {
// Tie
if (rockValues.has(letter1) && rockValues.has(letter2)) return 3 + 1;
if (paperValues.has(letter1) && paperValues.has(letter2)) return 3 + 2;
if (scissorsValues.has(letter1) && scissorsValues.has(letter2)) return 3 + 3;
// letter2 win
if (scissorsValues.has(letter1) && rockValues.has(letter2)) return 6 + 1;
if (rockValues.has(letter1) && paperValues.has(letter2)) return 6 + 2;
if (paperValues.has(letter1) && scissorsValues.has(letter2)) return 6 + 3;
// letter2 loss
if (rockValues.has(letter2)) return 1;
if (paperValues.has(letter2)) return 2;
return 3;
}
totalScore = rpsRounds
.map(pair => findResult(pair))
.reduce((totalScore, roundScore) => totalScore + roundScore);
function findDecryptedResult([letter1, letter2]) {
// Tie
if (rockValues.has(letter1) && letter2 === "Y") return 3 + 1;
if (paperValues.has(letter1) && letter2 === "Y") return 3 + 2;
if (scissorsValues.has(letter1) && letter2 === "Y") return 3 + 3;
// Win
if (rockValues.has(letter1) && letter2 === "Z") return 6 + 2; // With paper
if (paperValues.has(letter1) && letter2 === "Z") return 6 + 3; // With scissors
if (scissorsValues.has(letter1) && letter2 === "Z") return 6 + 1; // With rock
// Lose
if (rockValues.has(letter1)) return 3; // With scissors
if (paperValues.has(letter1)) return 1; // With rock
return 2; // With paper
}
totalDecryptedScore = rpsRounds
.map(pair => findDecryptedResult(pair))
.reduce((totalScore, roundScore) => totalScore + roundScore);
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