Prolog Array Sorting

Signature of methods

• findExamsInRange(L, A, B, N): Returns in L all the exams with a vote range [A,B] stored in a BST. In N writes the number of controls done.

• listrange(L, A, B, N): Returns in L all the exams with a vote range [A,B] stored in a list. In N writes the number of controls done.

Examples

exam(geometria,23),
exam(fondamenti_inf_1,29),
exam(calc_delle_prob,21),
exam(analisi_mat_1,25),
exam(fisica,26),
exam(calc_elettronici,26),
exam(analisi_mat_2,24),
exam(controlli_autom,29),
exam(teoria_dei_sitemi,24),
exam(reti_di_calcolatori,25),
exam(fondamenti_inf_2,24),
exam(sistemi_operativi,28),
exam(basi_di_dati,25),
exam(telecomunicazioni,20),
exam(ricerca_operativa,22),
exam(contr_gest_reti,28),
exam(complementi_fisica,19)

BST

?- findExamsInRange(L, 23, 27, N).

L = [exam(geometria, 23), exam(analisi_mat_1, 25), exam(analisi_mat_2, 24), exam(teoria_dei_sitemi, 24),
exam(fondamenti_inf_2, 24), exam(reti_di_calcolatori, 25), exam(basi_di_dati, 25), exam(fisica, 26),
exam(calc_elettronici, 26)],

N = 24.

List

?- listrange(L, 23, 27, N).

L = [exam(geometria, 23), exam(analisi_mat_1, 25), exam(fisica, 26), exam(calc_elettronici, 26),
exam(analisi_mat_2, 24), exam(teoria_dei_sitemi, 24), exam(reti_di_calcolatori, 25),
exam(fondamenti_inf_2, 24), exam(basi_di_dati, 25)],

N = 26.