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del(X, L, L1),

X ;

L ;

L1 , X L.

:

1) X , L. ():

del(X, [X|L], L).

2) X , L . del. ():

del(X, [Y|L], [Y|L1]):- del(X,L,L1).

:

del(X, [X|L], L).

del(X, [Y|L], [Y|L1]):- del (X,L,L1).

, [1, 2, 3, 4] 3, :

GOAL

del(3, [1, 2, 3, 4], L),Write (L), nl.

: [1, 2, 4].

X .

X = 3 [1 | 2, 3, 4] - , 1 , [2, 3, 4]

X = 3 [2 | 3, 4] - , 2 , [3, 4]

X = 3 [3 | 4] , L = [4]. L.

L = [1, 2, 4]





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