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Family Day update

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Ingy döt Net 2020-02-17 23:21:07 -08:00
parent aac6731f2c
commit 9ad63ea473
2442 changed files with 39761 additions and 8255 deletions
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6
Task/N-queens-problem/Factor/n-queens-problem.factor
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@ -5,7 +5,7 @@ IN: queens
:: safe? ( board q -- ? )
[let q board nth :> x
q iota [
q <iota> [
x swap
[ board nth ] keep
q swap -
@ -15,10 +15,10 @@ IN: queens
] ;
: solution? ( board -- ? )
dup length iota [ dupd safe? ] all? nip ;
dup length <iota> [ dupd safe? ] all? nip ;
: queens ( n -- l )
iota all-permutations [ solution? ] filter ;
<iota> all-permutations [ solution? ] filter ;
: .queens ( n -- )
queens