This commit is contained in:
Yanick Champoux 2022-12-08 11:18:50 -05:00
parent ff4203a58f
commit 94fc825a0b

View File

@ -1,6 +1,6 @@
import * as R from "remeda"; import * as R from "remeda";
import { readFile } from "../05/part1.js"; import { readFile } from "../05/part1.js";
import Victor from '@a-robu/victor'; import Victor from "@a-robu/victor";
const V = (...args) => new Victor(...args); const V = (...args) => new Victor(...args);
@ -8,16 +8,16 @@ const readInput = (...args) =>
readFile(...args) readFile(...args)
.split("\n") .split("\n")
.filter((x) => x) .filter((x) => x)
.map( l => l.split('').map( x => parseInt(x) ) ); .map((l) => l.split("").map((x) => parseInt(x)));
export function generateVisibilityGrid(forest) { export function generateVisibilityGrid(forest) {
const size = forest.length; const size = forest.length;
const visibility = Array(size).fill(null).map( const visibility = Array(size)
() => Array(size).fill(false) .fill(null)
); .map(() => Array(size).fill(false));
// top // top
const positions = R.range(size)(0).map( x => ({ const positions = R.range(size)(0).map((x) => ({
height: -1, height: -1,
position: V(x, -1), position: V(x, -1),
inc: V(0, 1), inc: V(0, 1),
@ -25,7 +25,7 @@ export function generateVisibilityGrid(forest) {
// bottom // bottom
positions.push( positions.push(
...R.range(size)(0).map( x => ({ ...R.range(size)(0).map((x) => ({
height: -1, height: -1,
position: V(x, size), position: V(x, size),
inc: V(0, -1), inc: V(0, -1),
@ -33,14 +33,14 @@ export function generateVisibilityGrid(forest) {
); );
positions.push( positions.push(
...R.range(size)(0).map( x => ({ ...R.range(size)(0).map((x) => ({
height: -1, height: -1,
position: V(-1, x), position: V(-1, x),
inc: V(1, 0), inc: V(1, 0),
})) }))
); );
positions.push( positions.push(
...R.range(size)(0).map( x => ({ ...R.range(size)(0).map((x) => ({
height: -1, height: -1,
position: V(size, x), position: V(size, x),
inc: V(-1, 0), inc: V(-1, 0),
@ -51,7 +51,7 @@ export function generateVisibilityGrid(forest) {
if (Math.min(pos.x, pos.y) < 0) return true; if (Math.min(pos.x, pos.y) < 0) return true;
if (Math.max(pos.x, pos.y) >= size) return true; if (Math.max(pos.x, pos.y) >= size) return true;
return false; return false;
} };
while (positions.length) { while (positions.length) {
const pos = positions.shift(); const pos = positions.shift();
@ -74,7 +74,7 @@ export const puzzleInput = readInput(import.meta.url, "input");
export const sample = readInput(import.meta.url, "sample"); export const sample = readInput(import.meta.url, "sample");
function printMap(forest) { function printMap(forest) {
forest.forEach( line => console.log(line.join(' ')) ); forest.forEach((line) => console.log(line.join(" ")));
return forest; return forest;
} }