Bubblesort

Hier sind 3 verschiedene Varianten:

[code:1]bubblesort(L_In,L_Out):-
append(L_Front, [A, B|Rest], L_In),
B < A,!,
append(L_Front, [B, A|Rest], L_Rest),
bubblesort(L_Rest, L_Out).
bubblesort(Liste, Liste).[/code:1]

[code:1]bubblesort(Xs,Xs):- geordnet(Xs).
bubblesort(Xs,Ys):-
append(As,[X,Y|Rs],Xs),
X>Y,
append(As,[Y,X|Rs],Xs1),
bubblesort(Xs1,Ys).[/code:1]

[code:1]bubble_sort(List,Sorted):-bubblesort(List,[],Sorted).
bubblesort([],Acc,Acc).
bubblesort([H|T],Acc,Sorted):-bubble(H,T,NT,Max),bubblesort(NT,[Max|Acc],Sorted).

bubble(X,[],[],X).
bubble(X,[Y|T],[Y|NT],Max):-X>Y,bubble(X,T,NT,Max).
bubble(X,[Y|T],[X|NT],Max):-X=<Y,bubble(Y,T,NT,Max).[/code:1]