#Metrics Brah
#First, PowerShell's native array methods
$Iterations = 10000;


$PSArrayMetrics = Measure-Command -Expression { 
    $PSArray = @(); 
    for ($i=0; $i -lt $Iterations; $i++) {
        $PSArray += $i;
    }
}

$PSInitializedArrayMetrics = Measure-Command -Expression { 
    $PSArray = @(0)*$Iterations; 
    for ($i=0; $i -lt $Iterations; $i++) {
        $PSArray[$i]=$i;
    }
}

$PSInitializedArrayReadMetrics = Measure-Command -Expression { 
    for ($i=0; $i -lt $Iterations; $i++) {
        $null=$PSArray.Contains($I)
    }
}

$PSArrayPipeFilterMetrics = Measure-Command -Expression { 
    for ($i=0; $i -lt $Iterations; $i++) {
        $null = $PSArray | Where-Object{$_ -eq $i}
    }
}

$NetArrayMetrics = Measure-Command -Expression { 
    $PSArray = [int[]]::new($Iterations);
    for ($i=0; $i -lt $Iterations; $i++) {
        $PSArray[$i]=$i;
    }
}

$NetArrayReadMetrics = Measure-Command -Expression { 
    for ($i=0; $i -lt $Iterations; $i++) {
        $null=$PSArray.Contains($I)
    }
}

#So initialize your arrays and you should be fine

$NetListMetrics = Measure-Command -Expression { 
    $PSArray = [System.Collections.Generic.List[int]]::new();
    for ($i=0; $i -lt $Iterations; $i++) {
        $PSArray.Add($I)
    }
}

#Reads

$NetListReadsMetrics = Measure-Command -Expression { 
    for ($i=0; $i -lt $Iterations; $i++) {
        $null=$PSArray.Contains($I)
    }
}

#Lets try sorting and binary search

$PSArray.Sort()

$NetListBinarysearchMetrics = Measure-Command -Expression { 
    for ($i=0; $i -lt $Iterations; $i++) {
        $null=$PSArray.BinarySearch($I)
    }
}

#If you can't consider using lists instead

$PSHashTable = Measure-Command -Expression { 
    $PSArray = @{}
    for ($i=0; $i -lt $Iterations; $i++) {
        $PSArray += @{$I.ToString()=$I}
    }
}

$PSHashAddTable = Measure-Command -Expression { 
    $PSArray = @{}
    for ($i=0; $i -lt $Iterations; $i++) {
        $PSArray.Add($I.ToString(),$I)
    }
}

#And reads

$PSHashTableReads = Measure-Command -Expression { 
    for ($i=0; $i -lt $Iterations; $i++) {
        $null = $PSArray.ContainsKey($i) #I dont really care about value atm
    }
}

#and .net version

$NetHashTable = Measure-Command -Expression { 
    $PSArray = [System.Collections.Generic.Dictionary[string,int]]::new()
    for ($i=0; $i -lt $Iterations; $i++) {
        $PSArray.Add($I.ToString(), $I)
    }
}

#with reads

$NetHashTableReads = Measure-Command -Expression { 
    for ($i=0; $i -lt $Iterations; $i++) {
        $null = $PSArray.ContainsKey($i) #I dont really care about value atm
    }
}

#Well, that is alot faster