14 lines
468 B
Factor
14 lines
468 B
Factor
USING: arrays assocs kernel kernel.private sequences
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sequences.private sorting ;
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IN: sorting.extras
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: argsort ( seq quot: ( obj1 obj2 -- <=> ) -- sortedseq )
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[ dup length iota zip ] dip
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[ [ first-unsafe ] bi@ ] prepose
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sort [ second-unsafe ] map! ; inline
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: map-sort ( ... seq quot: ( ... elt -- ... key ) -- ... sortedseq )
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[ map ] curry keep zip
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[ { array } declare first-unsafe ] sort-with
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[ { array } declare second-unsafe ] map ; inline
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