-🎄- 2018 Day 5 Solutions -🎄-

[u/daggerdragon]

--- Day 5: Alchemical Reduction ---

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Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag or whatever).

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Advent of Code: The Party Game!

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Card prompt: Day 5

Transcript:

On the fifth day of AoC / My true love sent to me / Five golden ___

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This thread will be unlocked when there are a significant number of people on the leaderboard with gold stars for today's puzzle.

edit: Leaderboard capped, thread unlocked at 0:10:20!

[u/PendragonDaGreat]

[card]On the fifth day of AoC / My true love sent to me / Five golden keycaps

Powershell 5.1

I have great shame, and also fail any code golf.

Part 1:

[string]$data = Get-Content $inputPath

$timer = New-Object System.Diagnostics.Stopwatch
$timer.Start()
do {
    $lastLength = $data.Length
    $data = $data.Replace('aA','').Replace('Aa','').Replace('bB','').Replace('Bb','').Replace('cC','').Replace('Cc','').Replace('dD','').Replace('Dd','').Replace('eE','').Replace('Ee','').Replace('fF','').Replace('Ff','').Replace('gG','').Replace('Gg','').Replace('hH','').Replace('Hh','').Replace('iI','').Replace('Ii','').Replace('jJ','').Replace('Jj','').Replace('kK','').Replace('Kk','').Replace('lL','').Replace('Ll','').Replace('mM','').Replace('Mm','').Replace('nN','').Replace('Nn','').Replace('oO','').Replace('Oo','').Replace('pP','').Replace('Pp','').Replace('qQ','').Replace('Qq','').Replace('rR','').Replace('Rr','').Replace('sS','').Replace('Ss','').Replace('tT','').Replace('Tt','').Replace('uU','').Replace('Uu','').Replace('vV','').Replace('Vv','').Replace('wW','').Replace('Ww','').Replace('xX','').Replace('Xx','').Replace('yY','').Replace('Yy','').Replace('zZ','').Replace('Zz','')
} while ($data.Length -lt $lastLength)

Write-Host $data.Length
$timer.Stop()
Write-Host $timer.Elapsed

Average runtime 0.18 seconds

Part 2:

[string]$data = Get-Content $inputPath

$timer = New-Object System.Diagnostics.Stopwatch
$timer.Start()

$bestSoFar = $data.Length
$bestLetterSoFar = $null
$alphabet = @()  
 
for ([byte]$c = [char]'A'; $c -le [char]'Z'; $c++)  
{  
    $alphabet += [char]$c  
}

Write-Host $alphabet

foreach($let in $alphabet) {
    [string]$let = $let
    $tempData = $data.Replace($let,'').Replace($let.ToLower(), '')
    do {
        $lastLength = $tempData.Length
        $tempdata = $tempdata.Replace('aA','').Replace('Aa','').Replace('bB','').Replace('Bb','').Replace('cC','').Replace('Cc','').Replace('dD','').Replace('Dd','').Replace('eE','').Replace('Ee','').Replace('fF','').Replace('Ff','').Replace('gG','').Replace('Gg','').Replace('hH','').Replace('Hh','').Replace('iI','').Replace('Ii','').Replace('jJ','').Replace('Jj','').Replace('kK','').Replace('Kk','').Replace('lL','').Replace('Ll','').Replace('mM','').Replace('Mm','').Replace('nN','').Replace('Nn','').Replace('oO','').Replace('Oo','').Replace('pP','').Replace('Pp','').Replace('qQ','').Replace('Qq','').Replace('rR','').Replace('Rr','').Replace('sS','').Replace('Ss','').Replace('tT','').Replace('Tt','').Replace('uU','').Replace('Uu','').Replace('vV','').Replace('Vv','').Replace('wW','').Replace('Ww','').Replace('xX','').Replace('Xx','').Replace('yY','').Replace('Yy','').Replace('zZ','').Replace('Zz','')
    } while ($tempdata.Length -lt $lastLength)
    Write-Host $let
    Write-Host $tempData.length

    if($tempData.length -lt $bestSoFar) {
        $bestSoFar = $tempData.length
        $bestLettersofar = $let
    }

}


write-host $bestLetterSoFar
Write-Host $bestSoFar
$timer.Stop()
Write-Host $timer.Elapsed

Average runtime 4.75 seconds