Visual Prolog:最大流数 [英] Visual Prolog: Maximum number of anyflow
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问题描述
尝试执行此代码时收到错误消息Maximum number of anyflow variants (1000) exceeded
:
I get an error message Maximum number of anyflow variants (1000) exceeded
when trying to execute this code:
findNegative([], []).
findNegative([Q|V], Y) :-
Q > 0,
!,
findNegative(V, Y).
findNegative([H1|T1], S) :-
findNegative(T1, [H1|S]).
与尝试从以下答案中执行代码时相同: https://stackoverflow.com/a/6671142/4829408
Same when trying to execute code from this answer: https://stackoverflow.com/a/6671142/4829408
推荐答案
请考虑以下代码:
find_negatives([], [] ).
find_negatives([E|Es], Xs ) :- E >= 0, find_negatives(Es, Xs).
find_negatives([E|Es], [E|Xs]) :- E < 0, find_negatives(Es, Xs).
示例查询:
?- find_negatives([1,2,3,-1,-2,-3,0,1,2,0,-1], Xs).
Xs = [-1,-2,-3,-1]
; false.
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