RFR: 8143850: Add indexed get() and set() methods to ArrayDeque

[Archie Cobbs]

On Tue, 13 May 2025 08:58:28 GMT, ExE Boss <duke at openjdk.org> wrote:

>> Because it is backed by an array, the `ArrayDeque` class has the ability to get and replace any element in the list (accessed by index) in constant time. However, this capability is not exposed in the API.
>> 
>> Please review this PR which adds the following two new methods to `ArrayDeque`:
>> * `public E get(int index)`
>> * `public E set(int index, E element)`
>
> src/java.base/share/classes/java/util/ArrayDeque.java line 360:
> 
>> 358:      *
>> 359:      * @param index index of the element to return
>> 360:      * @return the element at the specified position in this deque
> 
> This can use the inline form of `@return`:
> Suggestion:
> 
>      * {@return the element at the specified position in this deque}
>      *
>      * @param index index of the element to return

Indeed - thanks!

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PR Review Comment: https://git.openjdk.org/jdk/pull/25189#discussion_r2086995656