IronScripter Challenge June 28, 2019

IronScripter-2019-06-28-Output.txt

KeyInterval: 1,12
Message:     PracticePowerShellDaily

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IronScripter-2019-06-28.ps1

$crypto = @"
P k T r 2 s z 2 * c F -
r a z 7 G u D 4 w 6 U #
g c t K 3 E @ B t 1 a Y
Q P i c % 7 0 5 Z v A e
W 6 j e P R f p m I ) H
y ^ L o o w C n b J d O
S i 9 M b e r # ) i e U
* f 2 Z 6 M S h 7 V u D
5 a ( h s v 8 e l 1 o W
Z O 7 l p K y J l D z $
- j I @ t T 2 3 R a i k
q = F & w B 6 c % H l y
"@
function Get-CryptoSolution {
    param(
        $FullText,
        $X,
        $Y
    )
    $FullText = $FullText.Replace("`r`n",'').Replace(' ','')
    $Counter = 0
    while ($Counter -lt $FullText.Length) {
        $First = $Counter + $X - 1
        $Second = $First + $Y
        try {
            $Message += $FullText.Substring($First,1)
            $Message += $FullText.Substring($Second,1)
            $Counter = $Counter + $X + $Y
        }
        catch { break }
    }
    $Message
}
for ($x = 1; $x -le 20; $x++) {
    for ($y = 1; $y -le 20; $y++) {
        $DecodedMessage = Get-CryptoSolution -FullText $crypto -X $x -Y $y
        if ($DecodedMessage.Length -gt ($X + $Y)) {
            [PsCustomObject]@{
                KeyInterval = '{0},{1}' -f $x,$y
                DecodedMessage = $DecodedMessage
            }
        }
    }
}

For anyone that visits this Gist, please feel free to comment.

I really thought about making a function too but in the end just went with a script with a hard coded max value. Our solutions are very similar. This was definitely a tough one to get some clean code.

I really thought about making a function too but in the end just went with a script with a hard coded max value. Our solutions are very similar. This was definitely a tough one to get some clean code.

How did you know the max value?

Did you get a result? My solution is very similar - brute force looping and looking for a result that is meaningful.

Yes, I just failed to post the result in this gist. I'll update it in a few.

I really thought about making a function too but in the end just went with a script with a hard coded max value. Our solutions are very similar. This was definitely a tough one to get some clean code.

How did you know the max value?

I guessed tbh. I initially started with something much larger but once I saw the solution had 12 in the interval I changed the max to that.