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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Averages-Root-mean-square/Prolog/averages-root-mean-square.pro Normal file
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:- initialization(main).
rms(Xs, Y) :-
sum_of_squares(Xs, 0, Sum),
length(Xs, N),
Y is sqrt(Sum / N).
sum_of_squares([], Sum, Sum).
sum_of_squares([X|Xs], A, Sum) :-
A1 is A + X * X,
sum_of_squares(Xs, A1, Sum).
main :-
bagof(X, between(1, 10, X), Xs),
rms(Xs, Y),
format('The root-mean-square of 1..10 is ~f\n', [Y]).