This commit is contained in:
Joshua Seigler 2020-12-06 00:45:06 -05:00
parent ffdc47f77c
commit b34569db85
3 changed files with 2239 additions and 0 deletions

View file

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const path = require('path')
const { read, position } = require('promise-path')
const fromHere = position(__dirname)
const report = (...messages) => console.log(`[${require(fromHere('../../package.json')).logName} / ${__dirname.split(path.sep).pop()}]`, ...messages)
async function run () {
const input = (await read(fromHere('input.txt'), 'utf8')).trim().split('\n\n')
await solveForFirstStar(input)
await solveForSecondStar(input)
}
function yesses (group) {
return group.replace(/\s+/gm, '').split('').reduce((acc, cur) => acc.includes(cur) ? acc : [...acc, cur], [])
}
async function solveForFirstStar (input) {
let solution = 0
for (const group of input) {
solution += yesses(group).length
}
// report('Input:', input);
report('Solution 1:', solution)
}
async function solveForSecondStar (input) {
let solution = 0
for (const group of input) {
const numAnswers = group.split('\n').length
solution += yesses(group).filter(yes => group.split(yes).length === numAnswers + 1).length
}
report('Solution 2:', solution)
}
run()