72 lines
1.6 KiB
JavaScript
72 lines
1.6 KiB
JavaScript
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const { Glib, Vector } = require('../../lib');
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const generatePad = (layout) => {
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const PAD = {};
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const rows = layout.split('\n');
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for (let i = 0; i < rows.length; i++) {
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for (let j = 0; j < rows[i].length; j++) {
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const source = rows[i][j];
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if (source.match(/\s/)) {
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continue;
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}
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const NUM = {};
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const pi = i - 1;
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if (pi >= 0 && pi < rows.length) {
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const target = rows[pi][j];
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if (target !== ' ' && typeof target === 'string') NUM.U = target;
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}
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const ni = i + 1;
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if (ni < rows.length) {
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const target = rows[ni][j];
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if (target !== ' ' && typeof target === 'string') NUM.D = target;
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}
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const pj = j - 1;
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if (pj >= 0) {
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const target = rows[i][pj];
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if (target !== ' ' && typeof target === 'string') NUM.L = target;
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}
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const nj = j + 1;
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if (nj < rows.length) {
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const target = rows[i][nj];
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if (target !== ' ' && typeof target === 'string') NUM.R = target;
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}
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PAD[source] = NUM;
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}
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}
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return PAD;
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};
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const PAD1txt = `
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123
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456
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789
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`;
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const PAD2txt = `
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1
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234
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56789
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ABC
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D
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`;
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const solve = (input, PAD) =>
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Glib.fromLines(input)
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.reduce(
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(code, line) =>
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code +
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line
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.trim()
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.split('')
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.reduce((last, direction) => {
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return PAD[last][direction] || last;
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}, code[code.length - 1]),
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'5',
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)
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.slice(1);
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module.exports = {
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'1': (input) => solve(input, generatePad(PAD1txt)),
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'2': (input) => solve(input, generatePad(PAD2txt)),
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};
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