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Ingy döt Net 2013-04-11 01:07:29 -07:00
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Task/Sorting-algorithms-Permutation-sort/Prolog/sorting-algorithms-permutation-sort.pro Normal file
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permutation_sort(L,S) :- permutation(L,S), sorted(S).
sorted([]).
sorted([_]).
sorted([X,Y|ZS]) :- X =< Y, sorted([Y|ZS]).
permutation([],[]).
permutation([X|XS],YS) :- permutation(XS,ZS), select(X,YS,ZS).