functions/Get-PSGCSumOfDigit.ps1
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function Get-PSGCSumOfDigit { <# .SYNOPSIS Calculates the sum of digits of a given digit. .DESCRIPTION Calculates the sum of digits of a given digit. .PARAMETER Digit The input digit .PARAMETER ResultLength If set >0 the results will be summed up to this digit length. .EXAMPLE Get-PSGCSumOfDigit "9999999999999999999999999" Returns 225 ((25 * 9)= 225) .EXAMPLE Get-PSGCSumOfDigit "789" -ResultLength 2 Returns 24 (7+8+9) .EXAMPLE Get-PSGCSumOfDigit "789" -ResultLength 1 Returns 6 (7+8+9=24, 2+4=6) .NOTES General notes #> [CmdletBinding()] param ( [Parameter(Mandatory = $true, Position = 1)] $Digit, $ResultLength=0 ) Write-PSFMessage "calculate sum-of-digits from $Digit" $DigitString="$Digit" $sum=($DigitString -split '' | Measure-Object -sum).sum if ($ResultLength -gt 0 -and "$sum".Length -gt $ResultLength){ $sum = Get-PSGCSumOfDigit $sum } Write-PSFMessage "Result=$sum" return $sum } |