File size: 2,296 Bytes
557a17a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | % la_maths.pl
%% numbers(5,1,[],N).
%% N=[1,2,3,4,5]
numbers(N2,N1,Numbers2) :-
(N2>=N1->
numbers(N2,N1,[],Numbers2);
numbers(N1,N2,[],Numbers2)),!.
numbers(N2,N1,Numbers1,Numbers2):-
numbers1(N2,N1,Numbers1,Numbers2),!.
numbers1(N2,N1,Numbers,Numbers) :-
N2 is N1-1,!.
numbers1(N2,N1,Numbers1,Numbers2) :-
N3 is N1+1,
append(Numbers1,[N1],Numbers3),
numbers1(N2,N3,Numbers3,Numbers2),!.
%% get_item_n([a,b,c],3,Item).
%% Item = c
get_item_n(A,B,C) :-
catch(get_item_n1(A,B,C),_,fail),!.
get_item_n1([],_,[]) :-!.%,fail.
get_item_n1(Exposition,Number1,Item) :-
Number2 is Number1-1,
length(List,Number2),
append(List,[Item|_],Exposition),!.
put_item_n(Exposition,Number1,Item2,Exposition2) :-
Number2 is Number1-1,
length(List,Number2),
append(List,[_Item1|Rest],Exposition),
append(List,[Item2|Rest],Exposition2),!.
% put_item_ns([a,b,c,b],[[2,d],[4,e]],F).
% F = [a, d, c, e].
put_item_ns(A,[],A) :- !.
put_item_ns(A,BCs,D) :-
BCs=[[B,C]|BCs2],
put_item_n(A,B,C,E),
put_item_ns(E,BCs2,D).
% get_n_item([4,6,7],6,L).
% L = 2
get_n_item(A,C,L2) :-
append(B,[C|_],A),length(B,L),L2 is L+1.
% delete_item_n([4,5,6],2,D).
% D = [4,6]
delete_item_n(A,N,D) :-
N1 is N-1,length(B,N1),append(B,[_|C],A),append(B,C,D),!.
sum(A,S) :-
sum(A,0,S), !.
sum([],S,S):-!.
sum(S0,S1,S2) :-
S0=[S3|S4],
S5 is S1+S3,
sum(S4,S5,S2),!.
% number_order(1000,M).
% M = 3
number_order(N1,M) :-
log(N1,N),log(10,P),M is ceiling(N/P),!.
foldr(plus,A,B) :-
foldr(plus,A,0,B).
maximum_length(List,Maximum_length) :-
findall(L,(member(A2,List),length(A2,L)),L2),
sort(L2,L3),
append(_,[Maximum_length],L3),!.
sub_list(List,Before_list,Sub_list,After_list) :-
append(Before_list,L1,List),
append(Sub_list,After_list,L1).
sub_list_reverse(List,Before_list,Sub_list,After_list) :-
reverse(List,L2),
append(To_after_list,L1,L2),
reverse(To_after_list,After_list),
reverse(L1,L11),
append(Before_list,Sub_list,L11).
all_distinct1(A) :- sort(A,B),msort(A,B).
split_list_on_item(A,Item,Lists) :-
(is_list(Item)->Item1=Item;Item1=[Item]),
findall(BID,(((append(B,C,A),append(Item1,F,C),
split_list_on_item(F,Item1,D),delete([B,Item1],[],BI),%foldr(append,[B,Item1],BI),
foldr(append,[BI,D],BID))->true;(A=[]->BID=[];BID=[A]))),Lists1),foldr(append,Lists1,Lists).
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