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mtrx 2024-12-06 21:55:19 +01:00
parent 1d79c15e2c
commit 6c7bc6c648
1 changed files with 43 additions and 5 deletions
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48
solutions/04-b.ts
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@ -6,13 +6,12 @@ import { readInput } from "../utils.ts";
class DayFour implements Solvable {
input = readInput('04')
matrix: string[][] = this.input.trim().split('\n').map(line => line.split(''))
public part1(): Solvable {
const matrix = this.matrix
const transpose = (m: string[][]) => m[0].map((_, i) => m.map(x => x[i]))
const matrix = this.input.trim().split('\n').map(line => line.split(''))
function lookAround(x: number, y: number) {
const lookAround = (x: number, y: number) => {
const allowed = {
top: y >= 3,
bottom: y <= matrix.length - 4,
@ -77,6 +76,45 @@ class DayFour implements Solvable {
}
public part2(): Solvable {
const matrix = this.matrix
const checkMas = (x: number, y: number): boolean => {
const allowed = (
y >= 1 &&
y <= matrix.length - 2 &&
x >= 1 &&
x <= matrix.length - 2
)
if (allowed) {
return (
(
matrix[y - 1][x - 1] === 'M' &&
matrix[y + 1][x + 1] === 'S' ||
matrix[y - 1][x - 1] === 'S' &&
matrix[y + 1][x + 1] === 'M'
)
&&
(
matrix[y - 1][x + 1] === 'M' &&
matrix[y + 1][x - 1] === 'S' ||
matrix[y - 1][x + 1] === 'S' &&
matrix[y + 1][x - 1] === 'M'
)
)
}
return false
}
let amountOfMatches = 0
for (let y = 0; y < matrix.length; y++) {
for (let x = 0; x < matrix.length; x++) {
if (matrix[y][x] === 'A')
if (checkMas(x, y)) amountOfMatches += 1
}
}
console.log(amountOfMatches)
return this
}
}