36 lines
1.3 KiB
JavaScript
36 lines
1.3 KiB
JavaScript
const fs = require('fs');
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let input = fs.readFileSync('input.txt', 'utf-8').split('\n').map(v => v.split(',').map(Number));
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let minX = input.reduce((a, b) => Math.min(a[0] || a, b[0]));
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let minY = input.reduce((a, b) => Math.min(a[1] || a, b[1]));
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let maxX = input.reduce((a, b) => Math.max(a[0] || a, b[0]));
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let maxY = input.reduce((a, b) => Math.max(a[1] || a, b[1]));
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values = {};
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for (let y = minY; y <= maxY; y++) {
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for (let x = minX; x <= maxX; x++) {
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let vs = input.map(v => Math.abs(v[0] - x) + Math.abs(v[1] - y));
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let min = Math.min.apply(null, vs);
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let index;
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if (vs.filter(a => a == min).length == 1) {
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index = vs.indexOf(min).toString();
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values[index] = (values[index] || 0) + 1;
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}
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}
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}
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for (edge of [minY, maxY]) {
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for (let x = minX; x <= maxX; x++) {
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let vs = input.map(v => Math.abs(v[0] - x) + Math.abs(v[1] - edge));
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index = vs.indexOf(Math.min(...vs)).toString();
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values[index] = Infinity
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}
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}
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for (edge of [minX, maxX]) {
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for (let y = minY; y <= maxY; y++) {
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let vs = input.map(v => Math.abs(v[0] - edge) + Math.abs(v[1] - y));
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index = vs.indexOf(Math.min(...vs)).toString();
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values[index] = Infinity
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}
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}
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finite = Object.values(values).filter(v => v != Infinity)
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console.log(finite.sort((a, b) => a < b)) // for some reason it doesn't sort them properly, but the answer will be somewhere near the top.
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