33 lines
874 B
JavaScript
33 lines
874 B
JavaScript
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import { readFileSync } from "fs";
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const input = readFileSync("rucksack.txt", "utf-8");
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const priorities = {};
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for(let i = 0; i < 26; i++) {
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priorities[String.fromCharCode(97 + i)] = i + 1;
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priorities[String.fromCharCode(65 + i)] = 26 + i + 1;
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}
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let prioritySum = 0;
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input.split('\n').forEach(rucksack => {
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let len = rucksack.length / 2;
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const compartment = [];
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compartment[0] = rucksack.substring(0, len);
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compartment[1] = rucksack.substring(len, rucksack.length);
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let charFound = false;
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for(let i = 0; i < len; i++) {
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for(let j = 0; j < len; j++) {
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if(compartment[0].charAt(i) === compartment[1].charAt(j) && !charFound) {
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prioritySum += priorities[compartment[0].charAt(i)];
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charFound = true;
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break;
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}
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}
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}
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console.log(prioritySum);
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});
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