Day three part one
This commit is contained in:
Eric Wagoner
parent
9d614b751a
commit
8ff8877392
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@ -0,0 +1,72 @@
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const fs = require('fs');
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// const inputArray = fs.readFileSync('sample.txt').toString().split("\n");
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const inputArray = fs.readFileSync('input.txt').toString().split("\n");
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// Part One
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const lineCount = inputArray.length;
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const realPartNumbers = [];
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for (i in inputArray) {
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let line = inputArray[i];
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const lineLength = line.length;
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const possiblePartNumbers = [];
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const parsedLine = line.split(/\D+/g);
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for (part of parsedLine) {
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!!parseInt(part) && possiblePartNumbers.push(parseInt(part));
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}
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for (part of possiblePartNumbers) {
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let isRealPart = false;
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const regex = new RegExp(`(?<!\\d)${part}(?!\\d)`);
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const startingPosition = line.search(regex);
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line = line.replace(part, '0'.repeat(part.toString().length)); // dang duplicates
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const endingPosition = startingPosition + part.toString().length - 1;
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if (startingPosition > 0 && line[startingPosition - 1] !== ".") {
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isRealPart = true;
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}
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if (endingPosition < lineLength - 1 && line[endingPosition + 1] !== "." && !isRealPart) {
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isRealPart = true;
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}
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if (i > 0 && !isRealPart) {
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let stringAbove = inputArray[i - 1].substring(startingPosition === 0 ? startingPosition : startingPosition - 1, endingPosition != lineLength - 1 ? endingPosition + 2 : undefined);
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stringAbove = stringAbove.replaceAll(".", "0");
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for (char of stringAbove) {
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if (!parseInt(char) && parseInt(char) !== 0) {
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isRealPart = true;
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}
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};
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}
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if (i < lineCount - 1 && !isRealPart) {
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let stringBelow = inputArray[parseInt(i) + 1].substring(startingPosition === 0 ? startingPosition : startingPosition - 1, endingPosition !== lineLength - 1 ? endingPosition + 2 : undefined);
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stringBelow = stringBelow.replaceAll(".", "0");
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for (char of stringBelow) {
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if (!parseInt(char) && parseInt(char) !== 0) {
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isRealPart = true;
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}
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};
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}
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if (isRealPart) {
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realPartNumbers.push(part);
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}
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}
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}
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console.log(realPartNumbers.reduce((a, b) => a + b, 0));
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// Part Two
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for (i in inputArray) {
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const contents = inputArray[i].split(" ");
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}
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console.log();
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// functions
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@ -0,0 +1,140 @@
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467..114..
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...*......
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..35..633.
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......#...
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617*......
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.....+.58.
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..592.....
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......755.
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...$.*....
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.664.598..
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