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Solutions for day ten

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This commit is contained in:
Eric Wagoner 2021-12-12 01:22:15 -05:00
parent 3fb81925b8
commit 2795e1baf5
2 changed files with 161 additions and 0 deletions
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63
10/code.js Normal file
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@ -0,0 +1,63 @@
const fs = require('fs');
const inputArray = fs.readFileSync('input.txt').toString().split("\n");
const chunks = new Map();
chunks.set("(", ")");
chunks.set("{", "}");
chunks.set("[", "]");
chunks.set("<", ">");
const scores = new Map();
scores.set(")", 3);
scores.set("}", 1197);
scores.set("]", 57);
scores.set(">", 25137);
const completeScores = new Map();
completeScores.set("(", 1);
completeScores.set("{", 3);
completeScores.set("[", 2);
completeScores.set("<", 4);
function simplify(line) {
const length = line.length;
for (let x = 0; x < length; x++) {
for (let i = 0; i < length; i++) {
if (line[i+1] && chunks.get(line[i]) === line[i+1]) {
line = line.substring(0,i) + line.substring(i+2);
}
}
}
for (let i = 0; i < length; i++) {
if (line[i+1] && chunks.has(line[i]) && !chunks.has(line[i+1])) {
return line[i+1];
}
}
return line;
}
let score = 0;
let completeScoreArray = [];
for (const line of inputArray) {
const simplifiedLine = simplify(line);
if (simplifiedLine.length === 1) {
score += scores.get(simplifiedLine);
} else {
let lineScore = 0;
for (let i = simplifiedLine.length - 1; i >= 0; i--) {
lineScore = (lineScore * 5) + completeScores.get(simplifiedLine[i]);
}
completeScoreArray.push(lineScore);
}
}
// Part one
console.log(score);
// Part two
console.log(completeScoreArray.sort((a,b) => b - a)[Math.floor(completeScoreArray.length / 2)]);

98
10/input.txt Normal file
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@ -0,0 +1,98 @@
{[<({(<(<{((<(()())[()<>]>({[][]}{<>{}}))[[({}[]){()<>}]<{{}<>}(<><>)>]){[{{<>()}[{}<>]}({()[]}([]))]{{[(
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