44 lines
864 B
JavaScript
44 lines
864 B
JavaScript
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const fs = require("node:fs");
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const digits = {
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one: 1,
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two: 2,
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three: 3,
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four: 4,
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five: 5,
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six: 6,
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seven: 7,
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eight: 8,
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nine: 9,
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};
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const data = fs.readFileSync("input.txt", "utf8");
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const res = data
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.split("\n")
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.filter((line) => line && line != "")
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.map((line) => {
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let newLine = "";
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for (let i = 0; i < line.length; i++) {
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for (let j = i + 1; j < line.length + 1; j++) {
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const word = line.substring(i, j);
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if (word.match(/^[0-9]$/)) {
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newLine += word;
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}
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if (word in digits) {
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newLine += digits[word].toString();
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}
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}
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}
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return newLine;
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})
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.reduce((acc, line) => {
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const nums = line.split("");
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const first = parseInt(nums.at(0));
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const last = parseInt(nums.at(-1));
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return acc + (first * 10 + last);
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}, 0);
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console.log(res);
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