Creates a Spliterator using a given Iterator as the source of elements, with no initial size estimate.

The spliterator is not late-binding, inherits the fail-fast properties of the iterator, and implements trySplit to permit limited parallelism.

Traversal of elements should be accomplished through the spliterator. The behaviour of splitting and traversal is undefined if the iterator is operated on after the spliterator is returned.

Parameters:

<T>		Type of elements
iterator		The iterator for the source
characteristics		Characteristics of this spliterator's source or elements ( SIZED and SUBSIZED, if supplied, are ignored and are not reported.)

Returns:  A spliterator from an iterator

Exceptions:

NullPointerException

if the given iterator is null