Mattias Waldau wrote:
> 
> Nice suggestions changing the data structure, but I can't change it.
> 
> Instead, I implemented the indirection trick by Max Skaller. However instead
> of finding how to reorder the data, I just use a temporary data structure
> instead.

That's easiest, but it would be nice to find a fast way to reorder
the array in place, in case you get very large arrays, where
constructing a new one would exhaust memory, or slow down
the process due to the VM thrashing the disk.

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John (Max) Skaller, mailto:skaller@maxtal.com.au
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