How to implement large array in Dynamic programming

Hi, there
I am working on my dynamic pogramming codes using Java. The code is getting work, but the spead is very slow.
It is supposed that the very long time run is due to the large array implementation in my codes. Most times, I have two double arrays size up to 320000, and one array of class the same size.
Each iteration could take 30 minitues, the whole optimaization needs up to 50-100 iteration to get converged.
Could any experise help me to how to improve the memory performance in Java?
That is very important for my research.
Looking for very quick response.
Cheers
Jack from Edinburgh

An array of 320000 doubles isn't considered a large array. It must be
somewhere in your algorithm implementation that slows down your
process. Some relevant code snippets could clarify things ...
kind regards,
Jos

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