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Aubrey Jaffer skrev:
| Date: Tue, 07 Nov 2006 13:52:04 +0100 | From: =?ISO-8859-1?Q?Jens_Axel_S=F8gaard?= <firstname.lastname@example.org>| | The specification of sort! reads: | | Function: sort! sequence less?| Function: sort! sequence less? key| | Returns list, array, vector, or string sequence which has| been mutated to order its elements according to less?. Given | valid arguments, it is always the case that:| | (sorted? (sort! sequence less?) less?) => #t | | Would be possible to add that the sorting is in-place?Just before the specification of SORTED? is: The `!' variants sort in place; sort! returns its sequence argument.
I missed that. > | Date: Sun, 12 Nov 2006 16:06:59 -0800 > | From: Per Bothner <email@example.com> > | > | Aubrey Jaffer wrote: > | > http://en.wikipedia.org/wiki/Sorting_algorithm has a table of > | > properties for sort algorithms. "In-place merge sort" is shown as > | > stable, O(n log(n)) time, and using no additional memory. I meant "using no additional memory", when I wrote "in-place". > | "In-place merge sort" works well for lists. Is there an in-place > | version for vectors? > I think> http://citeseer.ist.psu.edu/rd/0%2C472101%2C1%2C0.25%2CDownload/http://citeseer.ist.psu.edu/cache/papers/cs/24817/http:zSzzSzstaff.cs.utu.fizSzstaffzSztomi.pasanenzSzPS_of_pubszSzmergesort_NJC.pdf/katajainen96practical.pdf
> gives one. > I am saturated with work now. Anyone up for coding it? Can't this be used? <http://svn.plt-scheme.org/plt/trunk/collects/srfi/32/vmsort.scm> -- Jens Axel Søgaard