The avatar for @jwolondon
Jo Wood
Professor of Visual Analytics interested in design, geovisualization, visual storytelling and computational thinking.
Public
Ξ🎄Advent of Code 2021
Edited
Sep 4, 2022
Fork of Advent of Code: 2021 Day 3
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Ξ🎄Advent of Code 2021
Advent of Code: 2021 Day 1
Advent of Code: 2021 Day 2
Advent of Code: 2021 Day 3Advent of Code: 2021 Day 4Advent of Code: 2021 Day 5Advent of Code: 2021 Day 6Advent of Code: 2021 Day 7Advent of Code: 2021 Day 8Advent of Code: 2021 Day 9Advent of Code: 2021 Day 10Advent of Code: 2021 Day 11Advent of Code: 2021 Day 12Advent of Code: 2021 Day 13Advent of Code: 2021 Day 14Advent of Code: 2021 Day 15Advent of Code: 2021 Day 16Advent of Code: 2021 Day 17Advent of Code: 2021 Day 18Advent of Code: 2021 Day 20Advent of Code: 2021 Day 22Advent of Code: 2021 Day 21Advent of Code: 2021 Day 24Advent of Code: 2021 Day 25
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function parse(input) {
return input
.split("\n")
.map((s) => s.split(" "))
.map(([instr, val]) =>
instr === "forward"
? [Number(val), 0]
: instr === "down"
? [0, Number(val)]
: [0, -Number(val)]
);
}
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function part1(input) {
const move = ([x, y], [x1, y1]) => [x + x1, y + y1];
return AOC.product(parse(input).reduce(move, [0, 0]));
}
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function part2(input) {
const move = ([x, y, aim], [x1, y1]) => [x + x1, y + aim * x1, aim + y1];
return AOC.product(parse(input).reduce(move, [0, 0, 0]).slice(0, 2));
}
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