PowerShell 5.1 - What is another way to concatenate my array values

Question

Given:

• csv integers 100,200
• PowerShell 5.1

I'd like to take the csv integers and make it look like the following:

$parmIn = "100,200"
desired output: "(100),(200)"

The way it is currently done:

   $parmIn = "100,200"
   $x = "(" + "$parmIn".replace(",", "),(") + ")"

What's another way to write this more concisely in PowerShell?
I was thinking something with array subexpressions or something.

Answer 1

Use the regex-based -replace operator:

 "100,200" -replace '\d+', '($&)'  # -> "(100),(200)"

• Regex \d+ matches one or more (+) decimal digits (\d)

• In the replacement expression, $& refers to what each \d+ match captured.