gcd.ps1

function gcd ($a, $b) {
    if ($b -gt $a)
    {
        $a, $b = $b, $a
    }

    Write-Host ">$a, $b"
    if ($b -eq 0)
    {
        return $a
    }
    
    return gcd $b ($a % $b)
}

$gcd = gcd -a 1920 -b 1080