feat(2020-day-13): solution to part 1

Author: developher-net

2020/day-13/busSchedules.test.js

@@ -7,7 +7,7 @@ const testData = {
   schedule: '7,13,x,x,59,x,31,19'
 }
 
-describe.only('--- Day 13: Shuttle Search ---', () => {
+describe('--- Day 13: Shuttle Search ---', () => {
   describe('Part 1', () => {
     describe('parseSchedule()', () => {
       it('cleans up the schedule', () => {

2020/day-13/input.txt

@@ -0,0 +1,2 @@
+1000067
+17,x,x,x,x,x,x,x,x,x,x,37,x,x,x,x,x,439,x,29,x,x,x,x,x,x,x,x,x,x,13,x,x,x,x,x,x,x,x,x,23,x,x,x,x,x,x,x,787,x,x,x,x,x,x,x,x,x,41,x,x,x,x,x,x,x,x,19

2020/day-13/solution.js

@@ -1,12 +1,13 @@
 const fs = require('fs')
 const path = require('path')
 const filePath = path.join(__dirname, 'input.txt')
-const { inputToArray } = require('../../2018/inputParser')
+const { linesToArray } = require('../../2018/inputParser')
+const { parseSchedule, findNext } = require('./busSchedules')
 
 fs.readFile(filePath, { encoding: 'utf8' }, (err, initData) => {
   if (err) throw err
 
-  initData = inputToArray(initData.trim())
+  initData = linesToArray(initData.trim())
 
   const resetInput = () => {
     // Deep copy to ensure we aren't mutating the original data
@@ -15,8 +16,11 @@ fs.readFile(filePath, { encoding: 'utf8' }, (err, initData) => {
 
   const part1 = () => {
     const data = resetInput()
-    console.debug(data)
-    return 'No answer yet'
+    const { wait, route } = findNext({
+      time: data[0],
+      schedule: parseSchedule(data[1])
+    })
+    return route * wait
   }
 
   const part2 = () => {