Split files into roughly equal partitions

get_partition.ps1

function Add-Prop([string]$name,$value){
    $input |add-member -memberType  Noteproperty -name $name  -value $value  -passThru 
}
function Get-Partitions($no_partitions=4){
    $sums    = @()       
    $indexes = (0..($no_partitions-1))
    $indexes |% { $sums+= 0 }
    $sortedBySize = $input | Sort  Length -Descending    
    
    foreach($file in $sortedBySize){        
        $current_min= [System.Int32]::MaxValue               
        foreach( $i in $indexes ){                      
            if(  $current_min -gt $sums[ $i ] )
             {        
                $current_min   = $sums[ $i ]
                $index         = $i 
             } 
        }               
        
    $file | Add-Prop Partition $index| Add-Prop RunningSum( $sums[ $index ]+= $file.Length )
  }
} 

dir C:\windows\system32\*.dll |  Get-Partitions | Select BaseName,Partition,RunningSum| ogv