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Ingy döt Net 2013-06-05 21:47:54 +00:00
parent 1f1ad49427
commit 6f050a029e
2496 changed files with 37609 additions and 3031 deletions
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8
Task/Power-set/Racket/power-set.rkt
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@ -1,8 +1,6 @@
;;; Direct translation of 'functional' ruby method
(define (powerset s)
(for/fold ([outer-set (set(set))])
([element s])
(for/fold ([outer-set (set(set))]) ([element s])
(set-union outer-set
(list->set (set-map
outer-set
(λ(inner-set)(set-add inner-set element)))))))
(list->set (set-map outer-set
(λ(inner-set) (set-add inner-set element)))))))