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Re^3: how sort works

by tilly (Archbishop)
on Mar 08, 2011 at 07:35 UTC ( #891962=note: print w/replies, xml ) Need Help??

in reply to Re^2: how sort works
in thread how sort works

Do you know whether Perl's mergesort has borrowed a lot of ideas from Python's timsort?

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Re^4: how sort works
by JavaFan (Canon) on Mar 08, 2011 at 10:19 UTC
    I do not think so. John P. Linderman ported a C implementation of "Optimistic Merge Sort" by Peter M. Mcilroy to Perl. The comment in pp_sort.c says that this was presented at SODA '92, but that seems a typo. The ACM portal claims it was SODA '93. Citation. The article itself is downloadable - for a fee.

    Now it may very well be that timsort implemented the same algorithm, but I do not recall ever hearing any reference to timsort on the p5p mailing list.

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