I guess I'm being thick here but, at the end of your second pass, you have 2000 items in 2 arrays, and the original number in the hash. Then what?

And, does each "pass" mean a pass over 1000 (or 2000) elements of the array(s)? Or a full (millions) pass over the keys of the hash?

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In reply to Re^6: In-place sort with order assignment by BrowserUk
in thread In-place sort with order assignment by BrowserUk

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