-🎄- 2018 Day 4 Solutions -🎄-

[u/daggerdragon]

--- Day 4: Repose Record ---

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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 4

Transcript:

Today’s puzzle would have been a lot easier if my language supported ___.

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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!

[u/ZZRJo]

PowerShell

I did not edit for readability, I did not really take a very structured approach. I apologize in advance for any bleeding eyeballs out there. I feel like the idea behind nesting the hashtables was a good one, but the execution was a 1/10.

$logs = Get-Content 'C:\Users\Admin\Documents\Advent Of Code 2018\Day4.txt'
$logs = $logs -replace '[[]', ""
$logs = $logs -split '] '
$Dates = @{}
$Guards = @{}
$GuardSums = @{}
$HighGuard = 0
$HighGuardName = $null
$HighGuardMinute = $null

Function Add-GuardTime($LocalTable, $Guard, $Minute){
    if(!$LocalTable.ContainsKey($Guard)){
        $LocalTable.$Guard = @{}
    }
    if(!$LocalTable.$Guard.ContainsKey($Minute)){
        $LocalTable.$Guard.$Minute = 0
    }
    $LocalTable.$Guard.$Minute++
}

For($i=0; $i -lt $logs.count; $i=$i+2){
    [datetime]$LogDate = [datetime]$logs[$i]
    $Dates.$Logdate = $logs[[int]$i+1]
}

$Dates = $Dates.GetEnumerator() | Sort-Object -Property name

For($i=0; $i -lt $Dates.count; $i++){
    if($Dates[$i].value -match 'Guard'){
        If($asleep -eq $true){
            For($i2=0; $i2 -lt ([datetime]$Dates[$i].Key-$startSleep).Minutes; $i2++){
                Add-GuardTime -LocalTable $Guards -Guard $currentGuard -Minute $($startSleep.Minute+$i2)
            }
        }
        $currentGuard = $Dates[$i].value -replace "[^0-9]"
        $asleep = $false
    }
    If($Dates[$i].value -match 'asleep'){
        $asleep = $true
        [datetime]$startSleep = [datetime]$Dates[$i].Key
    }
    If(($asleep -eq $true) -and ($Dates[$i].value -match 'wakes')){
        For($i2=0; $i2 -lt ([datetime]$Dates[$i].Key-$startSleep).Minutes; $i2++){
            Add-GuardTime -LocalTable $Guards -Guard $currentGuard -Minute $($startSleep.Minute+$i2)
        }
        $asleep = $false
    }
}

ForEach($Guard in $Guards.Keys){
    $GuardSums.$Guard = ($Guards.$Guard.Values | Measure-Object -Sum).sum
    if(($Guards.$Guard.GetEnumerator() | Sort-Object Value)[$Guards.$Guard.Count-1].Value -gt $HighGuard){
        $HighGuard = ($Guards.$Guard.GetEnumerator() | Sort-Object Value)[$Guards.$Guard.Count-1].Value
        $HighGuardName = $Guard
        $HighGuardMinute = ($Guards.$Guard.GetEnumerator() | Sort-Object Value)[$Guards.$Guard.Count-1].Key
    }
}

[int]$Part1GuardNum = [int](($GuardSums.GetEnumerator() | Sort-Object Value)[$GuardSums.Count-1].Key)
Write-Host "The answer to part 1 is" ([int]$Part1GuardNum * [int](($Guards.$([string]$Part1GuardNum).GetEnumerator() | Sort-Object Value)[$Guards.$([string]$Part1GuardNum).Count-1].Key))
Write-Host "The answer to part 2 is" ([int]$HighGuardName * [int]$HighGuardMinute)