RFR: 8320759: Creation of random BigIntegers can be made faster [v3]

[fabioromano1]

On Wed, 2 Jul 2025 17:50:28 GMT, Raffaello Giulietti <rgiulietti at openjdk.org> wrote:

>> @bplb Maybe an assertion at the end of `randomBits(int, Random)` method, or a test class.
>
> @fabioromano1 Do you perhaps intend to reopen this PR?

@rgiulietti Yes, I will reopen this PR in future.

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PR Comment: https://git.openjdk.org/jdk/pull/16817#issuecomment-3029383596