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A-M baby

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Ingy döt Net 2013-04-10 21:29:02 -07:00
parent 764da6cbbb
commit db842d013d
19005 changed files with 197040 additions and 7 deletions
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Task/Greatest-subsequential-sum/Factor/greatest-subsequential-sum-1.factor Normal file
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USING: kernel locals math math.order sequences ;
:: max-with-index ( elt0 ind0 elt1 ind1 -- elt ind )
elt0 elt1 < [ elt1 ind1 ] [ elt0 ind0 ] if ;
: last-of-max ( accseq -- ind ) -1 swap -1 [ max-with-index ] reduce-index nip ;
: max-subseq ( seq -- subseq )
dup 0 [ + 0 max ] accumulate swap suffix last-of-max head
dup 0 [ + ] accumulate swap suffix [ neg ] map last-of-max tail ;

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Task/Greatest-subsequential-sum/Factor/greatest-subsequential-sum-2.factor Normal file
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( scratchpad ) { -1 -2 3 5 6 -2 -1 4 -4 2 -1 } max-subseq dup sum swap . .
{ 3 5 6 -2 -1 4 }
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