10 lines
146 B
Prolog
10 lines
146 B
Prolog
fac(0,1).
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fac(1,1).
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fac(2,2).
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fac(3,6).
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fac(4,24).
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fac(A,B) :-
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A > 0,
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fac(C,D),
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C is A-1,
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B is A*D. |