Implement the following predicate:
replace(E1, L1, E2, L2)
this holds when list L1 is the same as L2, except that in one place
where L1 has the value E1, L2 has E2. Note that only one
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occurrence of E1 is replaced. This must work in any mode in whict
at least one of L1 or L2 is a proper list (that is, either I or a list
whose tail is a proper list). For example:
replace(2,[1,2,3,41,5,X) should have only the solution X = [1,5,3,4]
replace(2,[1,2,3,2,11,5X) should backtrack over the solutions X
[1,53,2,11 and X = [1,2,3,5,1].
replace(2X,5,[1,5,3,5,1]) should backtrack over the solutions X=
[1,2,3,5,1] and X = [1,5,3,2,1].
replace(×,[a,b,c,d], Y,la, e, c,d]) should have only the solution X = b, Y =
replace(X,[1,2,3,2,1],Y,[1,5,3,5,11) should have no solutions (it should
Implement the following predicate:
zip(As, Bs, ABs)
this holds when As, Bs, and ABs are lists of the same length, and
each element of ABs is a term of the form A-B where A is the
corresponding element of As and B is the corresponding element o
Bs. This should work whenever at least one of the arguments is a
proper list. Note that – is an infix operator here, but aside from
syntax, A-B is an ordinary term whose functor is – and whose two
arguments are A and B. For example:
zip (11,2,3,4],[a,b,c,d],L) should have only the solution L=[1-a,2-b,3-c,4-
zip(X,Y, [1-a,2-b,3-c,4-d]) should have only the solution X=[1,2,3,4], Y=
zip([1,2,3,4], Y, [1-a,2-b,3-c,4-d]) should have only the solution Y=
la,b,c.d].
zip(XIa,b,c,d][1-P,2-Q,3-R,4-S]) should have only the solution X=
[1,2,3,4], P=a, Q=b, R=c, S=d.
zip([1,2,3] [a,b,c,d], L) should fail.
Implement the following predicate:
sublist(Xs, Ys)
this holds when Xs is a list containing some of the elements of Ys,
in the same order they appear in the list Ys. This should work
whenever Ys is a proper list. For example:
sublist(la,c,e],[a,b,c,d,e]) should succeed.
sublist(la,e,c],la,b,c,d,e]) should fail.
sublist(la,X,d],a,b,c,d,e]) should have the two solutions X=b and
sublist(X,la,b,cl) should have the eight solutións X=]; X=[cl; X=[bl;
X=[b,c); X=[a]; X=[a,c]; X=[a,b]; and X=[a,b,c].
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