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Ingy döt Net 2026-02-01 16:33:20 -08:00
parent 5150844a7d
commit 4bb20c9b71
7735 changed files with 38060 additions and 199180 deletions
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74
Task/Bulls-and-cows/Prolog/bulls-and-cows.pro
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@ -12,45 +12,45 @@ digits(8).
bulls_and_cows_server :-
proposition(LenGuess),
length(Solution, LenGuess),
choose(Solution),
repeat,
write('Your guess : '),
read(Guess),
( study(Solution, Guess, Bulls, Cows)
-> format('Bulls : ~w Cows : ~w~n', [Bulls, Cows]),
Bulls = LenGuess
; digits(Digits), Max is Digits + 1,
format('Guess must be of ~w digits between 1 and ~w~n',
[LenGuess, Max]),
fail).
proposition(LenGuess),
length(Solution, LenGuess),
choose(Solution),
repeat,
write('Your guess : '),
read(Guess),
( study(Solution, Guess, Bulls, Cows)
-> format('Bulls : ~w Cows : ~w~n', [Bulls, Cows]),
Bulls = LenGuess
; digits(Digits), Max is Digits + 1,
format('Guess must be of ~w digits between 1 and ~w~n',
[LenGuess, Max]),
fail).
choose(Solution) :-
digits(Digits),
Max is Digits + 1,
repeat,
maplist(\X^(X is random(Max) + 1), Solution),
all_distinct(Solution),
!.
digits(Digits),
Max is Digits + 1,
repeat,
maplist(\X^(X is random(Max) + 1), Solution),
all_distinct(Solution),
!.
study(Solution, Guess, Bulls, Cows) :-
proposition(LenGuess),
digits(Digits),
% compute the transformation 1234 => [1,2,3,4]
atom_chars(Guess, Chars),
maplist(\X^Y^(atom_number(X, Y)), Chars, Ms),
% check that the guess is well formed
length(Ms, LenGuess),
maplist(\X^(X > 0, X =< Digits+1), Ms),
proposition(LenGuess),
digits(Digits),
% compute the digit in good place
foldl(\X^Y^V0^V1^((X = Y->V1 is V0+1; V1 = V0)),Solution, Ms, 0, Bulls),
% compute the digits in bad place
foldl(\Y1^V2^V3^(foldl(\X2^Z2^Z3^(X2 = Y1 -> Z3 is Z2+1; Z3 = Z2), Ms, 0, TT1),
V3 is V2+ TT1),
Solution, 0, TT),
Cows is TT - Bulls.
% compute the transformation 1234 => [1,2,3,4]
atom_chars(Guess, Chars),
maplist(\X^Y^(atom_number(X, Y)), Chars, Ms),
% check that the guess is well formed
length(Ms, LenGuess),
maplist(\X^(X > 0, X =< Digits+1), Ms),
% compute the digit in good place
foldl(\X^Y^V0^V1^((X = Y->V1 is V0+1; V1 = V0)),Solution, Ms, 0, Bulls),
% compute the digits in bad place
foldl(\Y1^V2^V3^(foldl(\X2^Z2^Z3^(X2 = Y1 -> Z3 is Z2+1; Z3 = Z2), Ms, 0, TT1),
V3 is V2+ TT1),
Solution, 0, TT),
Cows is TT - Bulls.