get-topN.ps1
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function Get-TopN { Param( [parameter( ValueFromPipeLine=$true )] [string] $InputObject , [int] $Top = 10 ) Begin { $h = @{} } Process { $h[$InputObject]++ } End { $h.GetEnumerator() | Sort-Object -Property Value -Descending | Select-Object -First $top } } #for testing only <# 'neli', 'yks', 'kaks', 'yks', 'kolm', 'yks', 'kaks', 'yks' | get-topN -top 2 #> <# function Get-TopNOld { Param( [parameter( Mandatory=$true, Position=0 )] [hashtable] $InputObject, [int] $top = 10 ) # $arr = New-Object object[] $InputObject.keys.count # $InputObject.CopyTo($arr,0) # $arr | $InputObject.GetEnumerator() | # Select-Object -Property Name, Value | Sort-Object -Property Value -Descending | Select-Object -First $top } $h = @{} 'neli', 'yks', 'kaks', 'yks', 'kolm', 'yks', 'kaks', 'yks' | ForEach-Object { $h[$_]++ } Get-TopNOld -InputObject $h -top 2 #> |