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2dec.ts
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2dec.ts
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import getData from "./data";
const [_ts, _file, date, test] = process.argv;
const data: string = getData(date, test);
const game: Array<string> = data.split("\n");
const values: { [key: string]: number } = {
A: 1,
B: 2,
C: 3,
X: 1,
Y: 2,
Z: 3,
};
console.time("part 1");
const playRound = (game: string): number => {
switch (game) {
case "A X":
case "B Y":
case "C Z":
return 3;
case "A Y":
case "B Z":
case "C X":
return 6;
default:
return 0;
}
};
const part1: number = game.reduce(
(acc: number, round: string) =>
acc + playRound(round) + values[round.split(" ")[1]],
0
);
console.timeEnd("part 1");
console.log(part1);
console.time("part 2");
const getOutcome = (input: string): number => {
const parts = input.split(" ");
switch (parts[1]) {
case "Y":
return 3;
case "Z":
return 6;
default:
return 0;
}
};
const moves = ["X", "Y", "Z"];
const makeMove = (input: string): number => {
const outcome = getOutcome(input);
const opponemtMove: string = input.split(" ")[0];
for (let k in moves) {
if (playRound(`${opponemtMove} ${moves[k]}`) === outcome) {
return outcome + values[moves[k]];
}
}
return 0;
};
const part2: number = game.reduce(
(acc: number, round: string) => acc + makeMove(round),
0
);
console.timeEnd("part 2");
console.log(part2);