joshua/advent-of-code-2020
1
0
Fork 0
mirror of https://github.com/seigler/advent-of-code-2020 synced 2025-07-27 08:16:08 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

day 4 solved

Browse source
This commit is contained in:
Joshua Seigler 2020-12-04 00:46:41 -05:00
parent 9db2a69230
commit 407eaf921e
3 changed files with 1239 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1121
solutions/day4/input.txt Normal file
View file

File diff suppressed because it is too large Load diff

75
solutions/day4/solution.js Normal file
View file

@ -0,0 +1,75 @@
const path = require('path')
const { read, position } = require('promise-path')
const fromHere = position(__dirname)
const report = (...messages) => console.log(`[${require(fromHere('../../package.json')).logName} / ${__dirname.split(path.sep).pop()}]`, ...messages)
async function run () {
const input = (await read(fromHere('input.txt'), 'utf8')).trim().split('\n\n').map(
line => line.replace(/\n/g, ' ').split(' ').reduce((acc, cur) => {
const [key, value] = cur.split(':')
return { ...acc, [key]: value }
}, {})
)
await solveForFirstStar(input)
await solveForSecondStar(input)
}
const required = [
'byr',
'iyr',
'eyr',
'hgt',
'hcl',
'ecl',
'pid'
]
const between = (a, b, c) => {
return a <= b && b <= c
}
const validators = {
byr: x => between(1920, parseInt(x), 2002),
iyr: x => between(2010, parseInt(x), 2020),
eyr: x => between(2020, parseInt(x), 2030),
hgt: x => {
const parsed = x.match(/(\d+)(cm|in)/)
if (!parsed) return false
const [, height, units] = parsed
if (units === 'cm') {
return between(150, parseInt(height), 193)
} else if (units === 'in') {
return between(59, parseInt(height), 76)
} else return false
},
hcl: x => /^#[0-9a-f]{6}$/.test(x),
ecl: x => ['amb', 'blu', 'brn', 'gry', 'grn', 'hzl', 'oth'].includes(x),
pid: x => /^[0-9]{9}$/.test(x)
}
function isValid (line) {
for (const key of required) {
console.log(Object.keys(line), key)
if (!Object.keys(line).includes(key)) { return false }
}
return true
}
async function solveForFirstStar (input) {
const solution = input.filter(isValid).length
report('Input:', input)
report('Solution 1:', solution)
}
async function solveForSecondStar (input) {
const solution = input.filter(doc => {
for (const [key, validator] of Object.entries(validators)) {
if (!validator(doc[key])) return false
}
return true
}).length
report('Solution 2:', solution)
}
run()

43
solutions/day4/viewer.html Normal file
View file

@ -0,0 +1,43 @@
<!DOCTYPE html>
<html>
<head>
<title>Solution Viewer</title>
<style>
html, body { font-family: sans-serif; }
pre { border-radius: 0.5em; padding: 0.5em; background: #eee; }
</style>
<script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
</head>
<body>
<div id="viewer">
<h1>Solution Viewer ({{ solutionTitle }})</h1>
<p>For interesting problems; this page can be used as a dynamic viewer.</p>
<h3><a href="./input.txt">input.txt</a></h3>
<pre><code>{{ inputText }}</code></pre>
<h3><a href="./solution.js">solution.js</a></h3>
<pre><code>{{ solutionText }}</code></pre>
</div>
<script>
const app = new Vue({
el: '#viewer',
data: () => {
return {
solutionText: '[Loading]',
inputText: '[Loading]'
}
},
computed: {
solutionTitle() {
const parts = (document.location + '').split('/')
return parts.reverse()[1]
}
},
async mounted () {
this.solutionText = (await axios.get('./solution.js')).data
this.inputText = (await axios.get('./input.txt')).data
}
})
</script>
</body>
</html>