refactor
parent
0da07275d0
commit
fe5a92fb37
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@ -2,121 +2,96 @@ import fs from "fs-extra";
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import fp from "lodash/fp.js";
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import _ from "lodash";
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import * as p1 from './part1.mjs';
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import * as p1 from "./part1.mjs";
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function decodedDigits(mapping) {
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const s = fp.invert(mapping);
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let solution = fp.invert(p1.digits);
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solution = fp.mapKeys(
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k => k.split('').map(
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l => s[l]
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).join('')
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,solution );
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const s = fp.invert(mapping);
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let solution = fp.invert(p1.digits);
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solution = fp.mapKeys(
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(k) =>
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k
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.split("")
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.map((l) => s[l])
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.join(""),
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solution
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);
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solution = fp.mapKeys( k => { k = k.split('').sort().join(''); return k }, solution );
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solution = fp.mapKeys((k) => {
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k = k.split("").sort().join("");
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return k;
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}, solution);
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return solution;
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return solution;
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}
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function guess(unknowns,guessed={},inputs) {
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console.log({unknowns,guessed});
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function guess(unknowns, guessed = {}, inputs) {
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const [next] = Object.keys(unknowns);
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const [ next ] = Object.keys(unknowns);
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if (!next) return guessed;
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if(!next) return guessed;
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if (unknowns[next].size === 0) return;
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if(unknowns[next].size === 0) return;
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for ( const p of unknowns[next].values() ) {
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for (const p of unknowns[next].values()) {
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let newUnknowns = fp.omit(next, unknowns);
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newUnknowns = fp.mapValues(
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s => {
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const x = new Set(s.values());
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x.delete(p);
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return x;
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}, newUnknowns );
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newUnknowns = fp.mapValues((s) => {
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const x = new Set(s.values());
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x.delete(p);
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return x;
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}, newUnknowns);
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//console.log({ newUnknowns })
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if(
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Object.values(newUnknowns).some( s => s.size === 0 )
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) continue;
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if (Object.values(newUnknowns).some((s) => s.size === 0)) continue;
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const r = guess( newUnknowns, { ...guessed, [next]: p }, inputs );
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if(r) {
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const s = fp.invert(r);
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let solution = fp.invert(p1.digits);
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solution = fp.mapKeys(
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k => k.split('').map(
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l => s[l]
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).join('')
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,solution );
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const r = guess(newUnknowns, { ...guessed, [next]: p }, inputs);
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solution = fp.mapKeys( k => { k = k.split('').sort().join(''); return k }, solution );
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if (r) {
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const solution = decodedDigits(r);
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console.log({r, solution });
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console.log({inputs})
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if( inputs.some( i => ! solution.hasOwnProperty(i.join('')) ) ) {
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console.log("Oh noes");
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} else {
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console.log("Oh yea");
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if (inputs.every((i) => solution.hasOwnProperty(i.join("")))) {
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return r;
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}
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}
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}
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}
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export function findMapping(input) {
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const values = 'abcdefg'.split('');
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const values = "abcdefg".split("");
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const possibility = Object.fromEntries(values.map(
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v => [ v, new Set(values) ]
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));
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const possibility = Object.fromEntries(
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values.map((v) => [v, new Set(values)])
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);
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for ( const seq of input ) {
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const p = Object.values(p1.digits).filter(
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d => d.length === seq.length
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).join('').split('');
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for (const seq of input) {
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const p = Object.values(p1.digits)
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.filter((d) => d.length === seq.length)
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.join("")
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.split("");
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for( const l of seq ) {
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possibility[l] = new Set(
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p.filter( x => possibility[l].has(x) )
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);
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for (const l of seq) {
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possibility[l] = new Set(p.filter((x) => possibility[l].has(x)));
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}
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// console.log(possibility);
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}
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const one = input.find((i) => i.length === 2);
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const seven = input.find((i) => i.length === 3);
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const [a] = seven.filter((x) => !one.includes(x));
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const one = input.find( i => i.length === 2 );
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const seven = input.find( i => i.length === 3 );
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const [a] = seven.filter( x => !one.includes(x) );
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for( const l of Object.values(possibility) ) {
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l.delete('a');
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for (const l of Object.values(possibility)) {
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l.delete("a");
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}
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possibility[a] = new Set(['a']);
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console.log(possibility);
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possibility[a] = new Set(["a"]);
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return guess(possibility,{},input);
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return guess(possibility, {}, input);
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}
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export function decodedOutput({input,output}) {
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const mapping = findMapping([...input,...output]);
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export function decodedOutput({ input, output }) {
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const mapping = findMapping([...input, ...output]);
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const digits = decodedDigits(mapping);
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console.log({ digits, output });
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return parseInt(output.map( e => digits[e.join('')] ).join(''));
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return parseInt(output.map((e) => digits[e.join("")]).join(""));
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}
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export function solution(input) {
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return _.sum( input.map( decodedOutput ) );
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return _.sum(input.map(decodedOutput));
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}
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@ -12,7 +12,7 @@ const input = fs.readFile("input", "utf8").then(p1.processInput);
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tap.test("part1", async (t) => {
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t.equal(p1.solution(await sample), 26);
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t.equal(p1.solution(await input), 26);
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t.equal(p1.solution(await input), 375);
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});
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tap.test("part2", async (t) => {
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