ResizableDoubleArray is not thread-safe yet has some synch. methods
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                 Key: MATH-757
                 URL: https://issues.apache.org/jira/browse/MATH-757
             Project: Commons Math
          Issue Type: Bug
            Reporter: Sebb


ResizableDoubleArray has several synchronised methods, but is not thread-safe, 
because class variables are not always accessed using the lock.

Is the class supposed to be thread-safe?

If so, all accesses (read and write) need to be synch.

If not, the synch. qualifiers could be dropped.

In any case, the protected fields need to be made private.


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