108 lines
3.3 KiB
JavaScript
108 lines
3.3 KiB
JavaScript
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const fs = require('fs');
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const inputArray = fs.readFileSync('input.txt').toString().split("\n");
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// Day One
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/*
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const lines = [];
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for (const line of inputArray) {
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const entry = line.split(" | ");
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lines.push([entry[0].split(" "), entry[1].split(" ")]);
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}
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let outputs = [];
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for (const output of lines) {
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outputs.push(output[1]);
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}
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outputs = outputs.flat(1);
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lengths = [2,3,4,7];
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let count = 0;
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for (const entry of outputs) {
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if (lengths.includes(entry.length)) {
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count++
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}
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}
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console.log(count)
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*/
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// Day Two
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const lines = [];
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for (const line of inputArray) {
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const entry = line.split(" | ");
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lines.push([...entry[0].split(" "), ...entry[1].split(" ")]);
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}
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let total = 0;
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for (const line of lines) {
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const digits = new Array(10).fill("");
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const bars = {
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top: "",
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upperLeft: "",
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upperRight: "",
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middle: "",
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lowerLeft: "",
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lowerRight: "",
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bottom: ""
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};
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for (const thing in line) {
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if (line[thing].length === 2) {
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digits[1] = line[thing];
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line[thing] = 1;
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} else if (line[thing].length === 3) {
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digits[7] = line[thing];
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line[thing] = 7;
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} else if (line[thing].length === 4) {
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digits[4] = line[thing];
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line[thing] = 4;
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} else if (line[thing].length === 7) {
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digits[8] = line[thing];
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line[thing] = 8;
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}
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}
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bars.top = digits[7].replace(digits[1][0], "").replace(digits[1][1], "");
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for (const thing in line) {
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if (line[thing].length === 5 && line[thing].includes(digits[1][0]) && line[thing].includes(digits[1][1])) {
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digits[3] = line[thing];
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line[thing] = 3;
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}
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}
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bars.upperLeft = digits[4].replace(digits[3][0], "").replace(digits[3][1], "").replace(digits[3][2], "").replace(digits[3][3], "").replace(digits[3][4], "");
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for (const thing in line) {
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if (line[thing].length === 5 && line[thing].includes(bars.upperLeft)) {
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digits[5] = line[thing];
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line[thing] = 5;
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}
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if (line[thing].length === 5 && !line[thing].includes(bars.upperLeft)) {
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digits[2] = line[thing];
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line[thing] = 2;
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}
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}
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bars.lowerLeft = digits[2].replace(digits[3][0], "").replace(digits[3][1], "").replace(digits[3][2], "").replace(digits[3][3], "").replace(digits[3][4], "");
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bars.lowerRight = digits[5].replace(bars.upperLeft, "").replace(digits[2][0], "").replace(digits[2][1], "").replace(digits[2][2], "").replace(digits[2][3], "").replace(digits[2][4], "");
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bars.upperRight = digits[1].replace(bars.lowerRight, "");
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for (const thing in line) {
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if (line[thing].length === 6 && !line[thing].includes(bars.lowerLeft)) {
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digits[9] = line[thing];
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line[thing] = 9;
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}
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if (line[thing].length === 6 && !line[thing].includes(bars.upperRight)) {
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digits[6] = line[thing];
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line[thing] = 6;
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}
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}
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for (const thing in line) {
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if (line[thing].length === 6) {
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digits[0] = line[thing];
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line[thing] = 0;
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}
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}
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bars.bottom = digits[9].replace(bars.top, "").replace(digits[4][0], "").replace(digits[4][1], "").replace(digits[4][2], "").replace(digits[4][3], "");
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bars.middle = digits[8].replace(digits[0][0], "").replace(digits[0][1], "").replace(digits[0][2], "").replace(digits[0][3], "").replace(digits[0][4], "").replace(digits[0][5], "");
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total = total + parseInt(line.slice(10).join(""),10);
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}
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console.log(total);
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