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76
Day11/Part1.js
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@ -1,38 +1,38 @@
import { readFileSync } from "fs"; import { readFileSync } from "fs";
const t0 = performance.now(); const t0 = performance.now();
const input = readFileSync("input.txt") const input = readFileSync("input.txt")
.toString() .toString()
.split(/\r*\n/) .split(/\r*\n/)
.filter((e) => e.length > 0) .filter((e) => e.length > 0)
.map((e) => e.split("")); .map((e) => e.split(""));
const expand = (arr) => const expand = (arr) =>
arr.reduce( arr.reduce(
(a, i) => [ (a, i) => [
...a, ...a,
...(i.some((e) => e !== ".") ? [i] : [i, Array(i.length).fill(".")]), ...(i.some((e) => e !== ".") ? [i] : [i, Array(i.length).fill(".")]),
], ],
[] []
); );
const flip = (current) => const flip = (current) =>
Array.from({ length: current[0].length }, (_, x) => Array.from({ length: current[0].length }, (_, x) =>
Array.from({ length: current.length }, (_, y) => current[y][x]) Array.from({ length: current.length }, (_, y) => current[y][x])
); );
const universe = flip(expand(flip(expand(input)))); const universe = flip(expand(flip(expand(input))));
const galaxies = universe const galaxies = universe
.map((a, y) => a.map((b, x) => ({ s: b, x, y })).filter((b) => b.s === "#")) .map((a, y) => a.map((b, x) => ({ s: b, x, y })).filter((b) => b.s === "#"))
.filter((e) => e.length > 0) .filter((e) => e.length > 0)
.reduce((a, i) => [...a, ...i], []); .reduce((a, i) => [...a, ...i], []);
const distances = galaxies.map((c, i) => const distances = galaxies.map((c, i) =>
galaxies.reduce( galaxies.reduce(
(a, n, j) => a + (j > i ? Math.abs(c.x - n.x) + Math.abs(c.y - n.y) : 0), (a, n, j) => a + (j > i ? Math.abs(c.x - n.x) + Math.abs(c.y - n.y) : 0),
0 0
) )
); );
const sum = distances.reduce((a, i) => a + i); const sum = distances.reduce((a, i) => a + i);
console.log(sum); console.log(sum);
const t1 = performance.now(); const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`); console.log(`Runtime: ${t1 - t0}ms`);

88
Day11/Part2.js
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@ -1,44 +1,44 @@
import { readFileSync } from "fs"; import { readFileSync } from "fs";
const t0 = performance.now(); const t0 = performance.now();
const input = readFileSync("input.txt") const input = readFileSync("input.txt")
.toString() .toString()
.split(/\r*\n/) .split(/\r*\n/)
.filter((e) => e.length > 0) .filter((e) => e.length > 0)
.map((a, j) => a.split("").map((b, i) => ({ s: b, x: i, y: j }))); .map((a, j) => a.split("").map((b, i) => ({ s: b, x: i, y: j })));
const expand = (arr) => { const expand = (arr) => {
let expansion = 0; let expansion = 0;
return arr.map((a) => { return arr.map((a) => {
const c = !a.some((b) => b.s !== "."); const c = !a.some((b) => b.s !== ".");
if (c) expansion += 999999; if (c) expansion += 999999;
return a.map((b) => { return a.map((b) => {
const { s, x, y } = b; const { s, x, y } = b;
return { s, x, y: y + expansion }; return { s, x, y: y + expansion };
}); });
}); });
}; };
const flip = (current) => const flip = (current) =>
Array.from({ length: current[0].length }, (_, cx) => Array.from({ length: current[0].length }, (_, cx) =>
Array.from({ length: current.length }, (_, cy) => { Array.from({ length: current.length }, (_, cy) => {
const { s, x, y } = current[cy][cx]; const { s, x, y } = current[cy][cx];
return { s, x: y, y: x }; return { s, x: y, y: x };
}) })
); );
const universe = flip(expand(flip(expand(input)))); const universe = flip(expand(flip(expand(input))));
const galaxies = universe const galaxies = universe
.map((a) => a.filter((b) => b.s === "#")) .map((a) => a.filter((b) => b.s === "#"))
.filter((e) => e.length > 0) .filter((e) => e.length > 0)
.reduce((a, i) => [...a, ...i], []); .reduce((a, i) => [...a, ...i], []);
const distances = galaxies.map((c, i) => const distances = galaxies.map((c, i) =>
galaxies.reduce( galaxies.reduce(
(a, n, j) => a + (j > i ? Math.abs(c.x - n.x) + Math.abs(c.y - n.y) : 0), (a, n, j) => a + (j > i ? Math.abs(c.x - n.x) + Math.abs(c.y - n.y) : 0),
0 0
) )
); );
const sum = distances.reduce((a, i) => a + i); const sum = distances.reduce((a, i) => a + i);
console.log(sum); console.log(sum);
const t1 = performance.now(); const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`); console.log(`Runtime: ${t1 - t0}ms`);

280
Day11/input.txt
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@ -1,140 +1,140 @@
..#............................#....................................................................................#..........#........#... ..#............................#....................................................................................#..........#........#...
..........#.........................................#....................................................................................... ..........#.........................................#.......................................................................................
...................#..........................................................................#............................................. ...................#..........................................................................#.............................................
.....................................................................................#.............................................#........ .....................................................................................#.............................................#........
.......#.......#.............#..........#......#...................#.....#.................................................................. .......#.......#.............#..........#......#...................#.....#..................................................................
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....#...........................................#...............#........................................................................... ....#...........................................#...............#...........................................................................
.........................#.......................................................................#.......................................... .........................#.......................................................................#..........................................
...................................#......................#.......................................................#.......................#. ...................................#......................#.......................................................#.......................#.
..................#...........................................................#.......................#.................#...........#....... ..................#...........................................................#.......................#.................#...........#.......
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......#..........................................................#......#........................................................#.......... ......#..........................................................#......#........................................................#..........
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.....#.........................#........#..............................................#.................#........................#......... .....#.........................#........#..............................................#.................#........................#.........
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....#....................#...................#...................#................................................#...........#...........#. ....#....................#...................#...................#................................................#...........#...........#.
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..#........#..........#...............#..................................................................#..........#......................# ..#........#..........#...............#..................................................................#..........#......................#
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.......................#.........#........................................#..............................#...............................#.. .......................#.........#........................................#..............................#...............................#..
..#...........#.......................................#.........................#........................................................... ..#...........#.......................................#.........................#...........................................................
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......................#..................................................................#......#.................................#.......#. ......................#..................................................................#......#.................................#.......#.
..#.......#................#......#..................................#.......#.....................................#........................ ..#.......#................#......#..................................#.......#.....................................#........................
................#...............................................#..................#....................#..................#................ ................#...............................................#..................#....................#..................#................

16
Day12/Part1.js
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@ -1,8 +1,8 @@
import { readFileSync } from "fs"; import { readFileSync } from "fs";
const t0 = performance.now(); const t0 = performance.now();
const input = readFileSync("input.txt").toString(); const input = readFileSync("input.txt").toString();
console.log(input); console.log(input);
const t1 = performance.now(); const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`); console.log(`Runtime: ${t1 - t0}ms`);

16
Day13/Part1.js
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@ -1,8 +1,8 @@
import { readFileSync } from "fs"; import { readFileSync } from "fs";
const t0 = performance.now(); const t0 = performance.now();
const input = readFileSync("input.txt").toString(); const input = readFileSync("input.txt").toString();
console.log(input); console.log(input);
const t1 = performance.now(); const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`); console.log(`Runtime: ${t1 - t0}ms`);

16
Day14/Part1.js
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@ -1,8 +1,8 @@
import { readFileSync } from "fs"; import { readFileSync } from "fs";
const t0 = performance.now(); const t0 = performance.now();
const input = readFileSync("input.txt").toString(); const input = readFileSync("input.txt").toString();
console.log(input); console.log(input);
const t1 = performance.now(); const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`); console.log(`Runtime: ${t1 - t0}ms`);

20
Day15/Part1.js
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@ -1,12 +1,8 @@
import { readFileSync } from "fs"; import { readFileSync } from "fs";
const t0 = performance.now(); const t0 = performance.now();
const input = readFileSync("input.txt").toString().split("\n")[0].split(","); const input = readFileSync("input.txt").toString();
const hashes = input.map((e) => console.log(input);
e.split("").reduce((a, i) => ((a + i.charCodeAt(0)) * 17) % 256, 0)
); const t1 = performance.now();
const sum = hashes.reduce((a, i) => a + i); console.log(`Runtime: ${t1 - t0}ms`);
console.log(sum);
const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`);

12
Day15/Part2.js
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@ -1,12 +0,0 @@
import { readFileSync } from "fs";
const t0 = performance.now();
const input = readFileSync("input.txt").toString().split("\n")[0].split(",");
const hashes = input.map((e) =>
e.split("").reduce((a, i) => ((a + i.charCodeAt(0)) * 17) % 256, 0)
);
const sum = hashes.reduce((a, i) => a + i);
console.log(sum);
const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`);

8
Day16/Part1.js
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@ -1,8 +0,0 @@
import { readFileSync } from "fs";
const t0 = performance.now();
const input = readFileSync("input.txt").toString();
console.log(input);
const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`);

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Day16/input.txt
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@ -1,110 +0,0 @@
\.\............/........|............/.-....................|............|.......-..............//....../../..
......\.-/..|...............-...-\......../.............-.../.............../........-................../../..
.........\..\......................................................../\.......\.............................-.
....|.........-..................|..../....-......................................|.../...............|.../...
.....|...|..-....|................/............./......./............../|.......|.....|.................../...
.........-............../.|.-...\..........................|..................//............-\......|.........
.........|...................||.........-.|/.......---...-...........\........\.-...\..../......|.............
.......|-................................................................./........../..../...................
......-......|......././...............................\.....\.........|...........|..\-............|\........
|...\.............................-...\\-.................|................................-.........|........
...\....|.|........................-.........................\..|............................-....|...........
\.........|..|./....................../..........-......|...-....................\....-../...\.-.....|/.......
......\./................|...................-....../..................................|.......-....-.........
......-.........................................|....\..................../-./-.......|........./.............
................|...|...\....\....-....//........./...../.....-..............|\.|..\.........\......./\....\.\
.\...|.....|......./....-...........|.............-..\...-..-....................|.../.....-...........--.....
......................................-................../..............\.\\........../.../................\..
.-..........|..|......................|....|.-|.....................-..../............|......./..../..\/.-.\..
..\..\.............../-......-................-......................................\....../......|..........
.........\.....\.......................................-../........./-....-.................\....../..../.....
......-..\..-.............|...................|....../.......\../........../.....-............................
.............|../.\...\....|...............|.........../..|-....../........../..../|.|.\........|........\..|.
..\............|...../...................\......................./...-.......-..........................-.....
....|......................|......../.|.\.../......|...|..-.....................|................../..\.......
.....................................................-................/\..-....|..........................-.\.
................../...\..........\...........\............................................./.../.........|.|..
.....-......................................./....-........|.-........................|.........\.....\.......
...............\/\..........|.|................................|.\......\......\............|...-.............
..................................\.......-.........|-........../...........\\..\.|../......|........\..|.....
..............-...........\.....\\./......................./...-...........-..........................././....
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58
README.md
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# Advent of Code 2023 # Advent of Code 2023
## About ## About
This repository stores my solutions to the daily challenges of [Advent of Code Calendar 2023](https://adventofcode.com/2023/). This repository stores my solutions to the daily challenges of [Advent of Code Calendar 2023](https://adventofcode.com/2023/).
## Execution ## Execution
Any of the scripts can be executed directly using [NodeJS](https://nodejs.org/en/download/). Any of the scripts can be executed directly using [NodeJS](https://nodejs.org/en/download/).
**Example:** **Example:**
```bash ```bash
cd Day01/ cd Day01/
node Part1.js node Part1.js
``` ```
## File explanation ## File explanation
A single challenge consists of 3 files: A single challenge consists of 3 files:
- `input.txt`: My input data, as provided by AoC. - `input.txt`: My input data, as provided by AoC.
- `Part1.js`: My solution to part 1 of the challenge. - `Part1.js`: My solution to part 1 of the challenge.
- `Part2.js`: My solution to part 2 of the challenge. - `Part2.js`: My solution to part 2 of the challenge.
Other special files: Other special files:
- [`template.js`](template.js): A template file to use when initializing a new challenge. - [`template.js`](template.js): A template file to use when initializing a new challenge.
- `sample.js`: Example or test code; Ignored by git (see [.gitignore](.gitignore)). - `sample.js`: Example or test code; Ignored by git (see [.gitignore](.gitignore)).

14
package.json
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{ {
"name": "aoc23", "name": "aoc23",
"version": "1.0.0", "version": "1.0.0",
"description": "Advent of Code", "description": "Advent of Code",
"author": "Baipyrus", "author": "Baipyrus",
"license": "ISC", "license": "ISC",
"type": "module" "type": "module"
} }

16
template.js
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import { readFileSync } from "fs"; import { readFileSync } from "fs";
const t0 = performance.now(); const t0 = performance.now();
const input = readFileSync("input.txt").toString(); const input = readFileSync("input.txt").toString();
console.log(input); console.log(input);
const t1 = performance.now(); const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`); console.log(`Runtime: ${t1 - t0}ms`);