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refactoring

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This commit is contained in:
Yanick Champoux 2021-12-10 13:39:15 -05:00
parent 12e65157e2
commit 85a70f1767
1 changed files with 15 additions and 17 deletions
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24
2021/10/part2.mjs
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@ -2,7 +2,7 @@ import fs from "fs-extra";
import fp from "lodash/fp.js"; import fp from "lodash/fp.js";
import _ from "lodash"; import _ from "lodash";
import * as p1 from './part1.mjs'; import * as p1 from "./part1.mjs";
function completionString(line) { function completionString(line) {
const stack = []; const stack = [];
@ -10,35 +10,33 @@ function completionString(line) {
for (const c of line) { for (const c of line) {
if (p1.closing[c]) { if (p1.closing[c]) {
stack.unshift(p1.closing[c]); stack.unshift(p1.closing[c]);
} else { } else if (c !== stack.shift()) {
if(c !== stack.shift()) return; return;
} }
} }
return stack; return stack;
} }
export function linesScore(lines) { export function linesScore(lines) {
lines = lines.map( completionString ).filter(x=>x); lines = lines.map(completionString).filter((x) => x);
const points = { const points = {
')': 1, ")": 1,
']': 2, "]": 2,
'}': 3, "}": 3,
'>': 4, ">": 4,
} };
const lineScore = line => line.reduce( (a,b) => 5*a + points[b], 0 ); const lineScore = (line) => line.reduce((a, b) => 5 * a + points[b], 0);
return lines.map(lineScore); return lines.map(lineScore);
} }
export function solution(lines) { export function solution(lines) {
const scores = linesScore(lines); const scores = linesScore(lines);
scores.sort( (a,b) => a<b?-1:1 ); scores.sort((a, b) => (a < b ? -1 : 1));
return scores[(scores.length - 1) / 2]; return scores[(scores.length - 1) / 2];
} }