From cf4e59c9d6bce337514fc7d77120baced0d6d7bc Mon Sep 17 00:00:00 2001 From: Timotej Lazar Date: Thu, 17 Mar 2016 14:19:45 +0100 Subject: Prolog: split lists exercises into two groups --- prolog/problems/lists_advanced/count_3/common.py | 54 ++++++++++++++++++++++++ prolog/problems/lists_advanced/count_3/en.py | 13 ++++++ prolog/problems/lists_advanced/count_3/sl.py | 13 ++++++ 3 files changed, 80 insertions(+) create mode 100644 prolog/problems/lists_advanced/count_3/common.py create mode 100644 prolog/problems/lists_advanced/count_3/en.py create mode 100644 prolog/problems/lists_advanced/count_3/sl.py (limited to 'prolog/problems/lists_advanced/count_3') diff --git a/prolog/problems/lists_advanced/count_3/common.py b/prolog/problems/lists_advanced/count_3/common.py new file mode 100644 index 0000000..2953f06 --- /dev/null +++ b/prolog/problems/lists_advanced/count_3/common.py @@ -0,0 +1,54 @@ +# coding=utf-8 + +from operator import itemgetter +import prolog.engine +import server.problems + +id = 120 +number = 27 +visible = False +facts = None + +solution = '''\ +count(_, [], 0). +count(X, [X|T], N) :- + count(X, T, NT), + N is NT + 1. +count(X, [Y|T], NT) :- + X \== Y, + count(X, T, NT). +''' + +test_cases = [ + ('count(a, [], X)', + [{'X': '0'}]), + ('count(r, [a, r, b, c, r], X)', + [{'X': '2'}]), + ('count(l, [l, l, l, 1, 2, 3], X)', + [{'X': '3'}]), + ('count(z, [a, b, c, z, z], X)', + [{'X': '2'}]), +] + +def test(code, aux_code): + n_correct = 0 + engine_id = None + try: + engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0) + if engine_id is not None and 'error' not in map(itemgetter(0), output): + # Engine successfully created, and no syntax error in program. + for query, answers in test_cases: + if prolog.engine.check_answers(engine_id, query=query, answers=answers, timeout=1.0): + n_correct += 1 + except socket.timeout: + pass + finally: + if engine_id: + prolog.engine.destroy(engine_id) + + hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}] + return n_correct, len(test_cases), hints + +def hint(code, aux_code): + # TODO + return [] diff --git a/prolog/problems/lists_advanced/count_3/en.py b/prolog/problems/lists_advanced/count_3/en.py new file mode 100644 index 0000000..dd13bc0 --- /dev/null +++ b/prolog/problems/lists_advanced/count_3/en.py @@ -0,0 +1,13 @@ +# coding=utf-8 + +name = 'count/3' +slug = 'find the number of occurrences of an element in list' + +description = '''\ +

count(X, L, N): N is the number of times the element X appears in the list L.

+
+?- count(1, [1,2,1,3,1], N).
+  N = 3.
+
''' + +hint = {} diff --git a/prolog/problems/lists_advanced/count_3/sl.py b/prolog/problems/lists_advanced/count_3/sl.py new file mode 100644 index 0000000..98cd6f8 --- /dev/null +++ b/prolog/problems/lists_advanced/count_3/sl.py @@ -0,0 +1,13 @@ +# coding=utf-8 + +name = 'count/3' +slug = 'Preštej kolikokrat se element pojavi v seznamu' + +description = '''\ +

count(X, L, N): N je število kolikokrat se element X pojavi v seznamu L.

+
+?- count(1, [1,2,1,3,1], N).
+  N = 3.
+
''' + +hint = {} -- cgit v1.2.1