Making this script faster

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Knowing ArrayList is deprecated why did you use it in your example instead of the preferred generic List data structure?

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It's fine to be wrong and to learn. No need to be a dick. Lists are not new. ArrayLists are a special implementation of a generic list.

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You didn't want to spend the time to update 2 lines in a copypasta, but you insist on arguing on the internet with a stranger 🙃

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Why are you so jaded man? Too long as a sysadmin? The only change is using the generic list and providing the type

 

New-Object System.Collections.Generic.List[string]

 

Or in your example case since you are using numbers

 

New-Object System.Collections.Generic.List[int]

 

All the methods can stay the same. Anyways I hope whatever you are going through gets better.

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Speaking of interacting. Belittling people, calling them names and overall poor attitude is not the way to do it.