DoubleStream toArray() returns an array containing the elements of this stream. It is a terminal operation i.e, it may traverse the stream to produce a result or a side-effect. After the terminal operation is performed, the stream pipeline is considered consumed, and can no longer be used.
Return Value : The function returns an array containing the elements of this stream.
[1.2, 3.3, 5.4, 7.1, 9.2]
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