47 lines
783 B
TypeScript
47 lines
783 B
TypeScript
const fs = require('fs');
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const input = fs.readFileSync(__dirname + '/input.txt', 'utf8');
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const arr1: Array<number> = [];
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const arr2: Array<number> = [];
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input.split("\n").forEach((n: string) => {
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if (n.match('^\s*$')) {
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return;
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}
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const ns = n.split(' ');
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arr1.push(parseInt(ns[0]));
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arr2.push(parseInt(ns[1]));
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});
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// Part 1
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arr1.sort();
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arr2.sort();
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let sum = 0;
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arr1.forEach((v, k) => {
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sum += Math.max(v, arr2[k]) - Math.min(v, arr2[k]);
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});
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console.log(sum);
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// Part 2
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const map: { [key: number]: number } = {};
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arr2.forEach((v) => {
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if (typeof map[v] === 'undefined') {
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map[v] = 1;
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} else {
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map[v]++;
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}
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});
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let score = 0;
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arr1.forEach((v) => {
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score += (v * (map[v] || 0));
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});
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console.log(score);
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