Ty/advent-of-code-2024
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6 changed files with 39 additions and 98 deletions
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1
.gitignore vendored
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@ -1 +0,0 @@
**/input.txt

9
aoc
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@ -1,9 +0,0 @@
#!/usr/bin/env zsh
setopt extendedglob
cd "day$1"
# Handle deno days
if [[ -n *.ts(#qN) ]]; then
deno eval --ext=ts "await import('./part$2.ts').then(m => m.solve()).then(s => console.log('The solution is', s))"
fi

20
day1/part1.ts
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@ -1,18 +1,16 @@
export async function solve() {
return await Deno.readTextFile("./input.txt").then(
const input = await Deno.readTextFile("./input.txt").then(
(f) =>
f.split("\n").reduce<[number[], number[]]>(
(
acc,
cur,
) => [
[...acc[0], +cur.split(" ")[0]],
[...acc[1], +cur.split(" ")[1]],
],
) => [[...acc[0], +cur.split(" ")[0]], [
...acc[1],
+cur.split(" ")[1],
]],
[[], []],
),
).then(([first, second]) => [first.toSorted(), second.toSorted()]).then(
([first, second]) =>
first.reduce((acc, cur, i) => acc + Math.abs(cur - second[i]), 0),
);
}
).then(([first, second]) => [first.toSorted(), second.toSorted()]).then((
[first, second],
) => first.reduce((acc, cur, i) => acc + Math.abs(cur - second[i]), 0));
console.log("Answer = " + input);

19
day1/part2.ts
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@ -1,17 +1,16 @@
export async function solve() {
return await Deno.readTextFile("./input.txt").then(
const input = await Deno.readTextFile("./input.txt").then(
(f) =>
f.split("\n").reduce<[number[], number[]]>(
(
acc,
cur,
) => [
[...acc[0], +cur.split(" ")[0]],
[...acc[1], +cur.split(" ")[1]],
],
) => [[...acc[0], +cur.split(" ")[0]], [
...acc[1],
+cur.split(" ")[1],
]],
[[], []],
),
).then(([first, second]) => [
).then(([first, second]) => [
first,
second.reduce((acc, cur) => {
if (acc[cur] !== undefined) acc[cur]++;
@ -19,7 +18,7 @@ export async function solve() {
return acc;
}, {} as Record<number, number>),
] as const).then(([first, map]) =>
]).then(([first, map]) =>
first.reduce((acc, cur) => acc + ((map[cur] ?? 0) * cur), 0)
);
}
);
console.log("Answer = " + input);

17
day2/part1.ts
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@ -1,17 +0,0 @@
export async function solve() {
return await Deno.readTextFile("./input.txt").then((f) =>
f.split("\n").filter((l) => {
const report = l.split(" ").map((s) => +s);
const increasing = report[0] < report[1];
let last = report[0];
for (const number of report.slice(1)) {
if (number > last && !increasing) return false;
if (number < last && increasing) return false;
if (Math.abs(number - last) < 1 || Math.abs(number - last) > 3) return false;
last = number;
}
return true;
}).reduce(acc => acc + 1, 0)
);
}

29
day2/part2.ts
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@ -1,29 +0,0 @@
export async function solve() {
return await Deno.readTextFile("./input.txt").then((f) =>
f.split("\n").filter((l) => {
const report = l.split(" ").map((s) => +s);
for (let i = 0; i < report.length; i++) {
const sliced = [
...report.slice(0, i),
...report.slice(i + 1, report.length),
];
const increasing = sliced[0] < sliced[1];
let last = sliced[0];
let failed = false;
for (const number of sliced.slice(1)) {
if (number > last && !increasing) failed = true;
if (number < last && increasing) failed = true;
if (
Math.abs(number - last) < 1 ||
Math.abs(number - last) > 3
) failed = true;
last = number;
}
if (failed) continue;
else return true;
}
return false;
}).reduce((acc) => acc + 1, 0)
);
}