queue or table which is better?

I need an array of clusters to store for the undefined term. I'm going to update, add new item.

Table or a queue can be used to store clusters. That would be preferable to use in what concerns the use of memory, fast execution and other performance parameters.

I also have some other doubts.

Consider a table of 8 elements. When a new item is added to the matrix by using "insert in the table."

If a new copy of 9 elements will be created? or 9th element is connected after the 8th element (such as linked lists)? or something else going on?

If a new copy is created, what happens to the old 8 items in memory, if this memory will be released or kept as such?

The same doubt in case of queues...

Thanks in advance...

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Although as far as I know, you can't delete an item at a particular place, or you will need to dequeue element, to store, to remove the particular item then the queue all the items. IMO if you must use a table for your application.

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