rev2.pl

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details
attribute value
description
owner Johannes Waldmann
uploaded 2017-08-17 03:45:17.0
disk size 304 Bytes
downloadable true
type
attribute value
name no_type
processor id 1
description this is the default benchmark type for rejected benchmarks and benchmarks that are not associated with a type.
owning community none
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% Author: Thomas Stroeder
% terminating

%query: rev(i,o).
rev(L,R) :- rev(L,[],R).

rev([],Y,Y).
rev(L,S,R) :- no(empty(L)), head(L,X), tail(L,T), rev(T,[X|S],R).

head([],_).
head([X|_],X).

tail([],[]).
tail([_|Xs],Xs).

empty([]).

no(X) :- X, !, failure(a).
no(_).

failure(b).
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