All files / day6 puzzle2.js

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1x
 
1x
 
 
 
 
1x
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1x
 
const { getPerformanceMade, extractData } = require('./puzzle1')
 
const extractAndJoinData = (fileInput) => {
  const [time, distance] = extractData(fileInput)
  return [[parseInt(time.join(''))], [parseInt(distance.join(''))]]
}
 
const resolvePuzzle = (inputFile) => {
  const possibilities = []
  const [time, distance] = extractAndJoinData(inputFile)
 
  for (let i = 0; i < time.length; i++) {
    let waysToWin = 0
    for (let j = 0; j < time[i]; j++) {
      const distanceMade = getPerformanceMade(j, time[i])
      if (distanceMade > distance[i]) {
        waysToWin++
      }
    }
    possibilities.push(waysToWin)
  }
  return possibilities.reduce((prev, curr) => prev * curr)
}
 
module.exports = { resolvePuzzle }