From cf4e59c9d6bce337514fc7d77120baced0d6d7bc Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Thu, 17 Mar 2016 14:19:45 +0100
Subject: Prolog: split lists exercises into two groups
---
prolog/problems/lists_advanced/len_2/common.py | 49 ++++++++++++++++++++++++++
prolog/problems/lists_advanced/len_2/en.py | 13 +++++++
prolog/problems/lists_advanced/len_2/sl.py | 13 +++++++
3 files changed, 75 insertions(+)
create mode 100644 prolog/problems/lists_advanced/len_2/common.py
create mode 100644 prolog/problems/lists_advanced/len_2/en.py
create mode 100644 prolog/problems/lists_advanced/len_2/sl.py
(limited to 'prolog/problems/lists_advanced/len_2')
diff --git a/prolog/problems/lists_advanced/len_2/common.py b/prolog/problems/lists_advanced/len_2/common.py
new file mode 100644
index 0000000..93a1faa
--- /dev/null
+++ b/prolog/problems/lists_advanced/len_2/common.py
@@ -0,0 +1,49 @@
+# coding=utf-8
+
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
+id = 119
+number = 26
+visible = False
+facts = None
+
+solution = '''\
+len([], 0).
+len([_|T], Len) :-
+ len(T, LenT),
+ Len is LenT + 1.
+'''
+
+test_cases = [
+ ('len([8, 3, 5, 1], X)',
+ [{'X': '4'}]),
+ ('len([2, -3, 5, 0, 3], X)',
+ [{'X': '5'}]),
+ ('len([], X)',
+ [{'X': '0'}]),
+]
+
+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/len_2/en.py b/prolog/problems/lists_advanced/len_2/en.py
new file mode 100644
index 0000000..3ca963e
--- /dev/null
+++ b/prolog/problems/lists_advanced/len_2/en.py
@@ -0,0 +1,13 @@
+# coding=utf-8
+
+name = 'len/2'
+slug = 'find the length of a list'
+
+description = '''\
+<p><code>len(L, Len)</code>: <code>Len</code> is the length of the list <code>L</code>.</p>
+<pre>
+?- len([1,2,3], Len).
+ Len = 3.
+</pre>'''
+
+hint = {}
diff --git a/prolog/problems/lists_advanced/len_2/sl.py b/prolog/problems/lists_advanced/len_2/sl.py
new file mode 100644
index 0000000..0e98272
--- /dev/null
+++ b/prolog/problems/lists_advanced/len_2/sl.py
@@ -0,0 +1,13 @@
+# coding=utf-8
+
+name = 'len/2'
+slug = 'Izračunaj dolžino danega seznama'
+
+description = '''\
+<p><code>len(L, Len)</code>: <code>Len</code> je dolžina seznama <code>L</code>.</p>
+<pre>
+?- len([1,2,3], Len).
+ Len = 3.
+</pre>'''
+
+hint = {}
--
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