Get highest count of items from multiple arrays in PowerShell

Question

Let's say I have multiple non-numerical arrays in PowerShell:

$a = (a, b, c, d)             # $a.count equals 4 items
$b = (e, f, g, h, i, j)       # $b.count equals 6 items, which is the highest count of items in one of the arrays
$c = (k, l, m, n, o)          # $c.count equals 5 items
$d = (p, q)                   # $d.count equals 2 items
...

After declaring all those arrays, I would like to get the highest number of counts from all of them, which in the case above would be a count of 6 from array $b. Is there an easy way to achieve this, instead of comparing each array against the next one and check if the count is higher than before?

Do you want to get only the highest count? or the array is also needed $b — user459872
– user459872, Commented Oct 8, 2021 at 8:08

user459872 · Accepted Answer · 2021-10-08 08:24:19Z

2

You can use Measure-Object Cmdlet with -Property and -Maximum Parameters. The -Property parameter allows you to measure based on the property value(In this case it's based on the array Count property)

$a = ('a', 'b', 'c', 'd')
$b = ('e', 'f', 'g', 'h', 'i', 'j')
$measureInfo = ($a, $b) | Measure-Object -Property Count -Maximum
Write-Output $measureInfo.Maximum # This will print 6

Note that this will print only the maximum Count. If you want the array also, you probably have to apply a filter based on this value.

$MaxArray = ($a, $b) | Where-Object {$_.Count -eq $maximumCount.Maximum}

edited Oct 8, 2021 at 8:24

answered Oct 8, 2021 at 8:19

user459872

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1 Comment

SHA-256 Over a year ago

Thank you, your solution was correct and exactly what I was looking for.

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