Created
January 26, 2011 05:58
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get powerset of set
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| (use '[clojure.set] | |
| '[clojure.test]) | |
| (defn powerset [ls] | |
| (if (empty? ls) '(()) | |
| (union (powerset (next ls)) | |
| (map #(conj % (first ls)) (powerset (next ls)))))) | |
| (deftest test-powerset | |
| (is (= '(()) (powerset '()))) | |
| (is (= '((1) ()) (powerset '(1)))) | |
| (is (= '((1) (1 2) (2) ()) (powerset '(1 2))))) |
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