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authorMartin Možina <martin.mozina@fri.uni-lj.si>2016-10-06 12:55:26 +0200
committerMartin Možina <martin.mozina@fri.uni-lj.si>2016-10-06 12:55:26 +0200
commit969812724912512740dbf037940a9e6770df19ed (patch)
tree7b738a757a9e425eefac4721b96ee9a482d42f90 /python/problems/recursion/path_to
parent15871f8f3982fc7c5de03a68229235ea616c6419 (diff)
Added recursion exercises.
Diffstat (limited to 'python/problems/recursion/path_to')
-rw-r--r--python/problems/recursion/path_to/common.py108
-rw-r--r--python/problems/recursion/path_to/en.py13
-rw-r--r--python/problems/recursion/path_to/sl.py30
3 files changed, 151 insertions, 0 deletions
diff --git a/python/problems/recursion/path_to/common.py b/python/problems/recursion/path_to/common.py
new file mode 100644
index 0000000..cf63b6c
--- /dev/null
+++ b/python/problems/recursion/path_to/common.py
@@ -0,0 +1,108 @@
+import re
+from python.util import has_token_sequence, string_almost_equal, \
+ string_contains_number, get_tokens, get_numbers, get_exception_desc, \
+ all_tokens, has_comprehension, has_loop, almost_equal, get_ast
+from server.hints import Hint
+
+id = 20805
+number = 5
+visible = True
+
+solution = '''\
+def pathto(fr, to):
+ if fr == to:
+ return [fr]
+ for c in children[fr]:
+ d = pathto(c, to)
+ if d is not None:
+ return [fr] + d
+'''
+
+hint_type = {
+ 'final_hint': Hint('final_hint')
+}
+
+precode = """
+children = {
+ "Adam": ["Matjaž", "Cilka", "Daniel", "Erik"],
+ "Aleksander": [],
+ "Alenka": [],
+ "Barbara": [],
+ "Cilka": [],
+ "Daniel": ["Elizabeta", "Hans"],
+ "Erik": [],
+ "Elizabeta": ["Ludvik", "Jurij", "Barbara", "Herman", "Mihael"],
+ "Franc": [],
+ "Herman": ["Margareta"],
+ "Hans": [],
+ "Jožef": ["Alenka", "Aleksander", "Petra"],
+ "Jurij": ["Franc", "Jožef"],
+ "Ludvik": [],
+ "Margareta": [],
+ "Matjaž": ["Viljem"],
+ "Mihael": [],
+ "Petra": [],
+ "Tadeja": [],
+ "Viljem": ["Tadeja"],
+}
+
+age = {
+ "Adam": 111, "Matjaž": 90, "Cilka": 88, "Daniel": 85, "Erik": 83,
+ "Viljem": 58, "Tadeja": 20, "Elizabeta": 67, "Hans": 64, "Ludvik": 50,
+ "Jurij": 49, "Barbara": 45, "Herman": 39, "Mihael": 32, "Franc": 30,
+ "Jožef": 29, "Margareta": 10, "Alenka": 5, "Aleksander": 7, "Petra": 9
+}"""
+
+def test(python, code):
+ code = precode + "\n" + code
+
+ func_name = 'pathto'
+ tokens = get_tokens(code)
+ if not has_token_sequence(tokens, ['def', func_name]):
+ return False, [{'id' : 'no_func_name', 'args' : {'func_name' : func_name}}]
+
+ in_out = [
+ (('Hans', 'Hans'), ['Hans']),
+ (('Daniel', 'Hans'), ['Daniel', 'Hans']),
+ (('Adam', 'Hans'), ['Adam', 'Daniel', 'Hans']),
+ (('Adam', 'Franc'), ['Adam', 'Daniel', 'Elizabeta', 'Jurij', 'Franc']),
+ (('Adam', 'Petra'), ['Adam', 'Daniel', 'Elizabeta', 'Jurij', 'Jožef', 'Petra']),
+ (('Elizabeta', 'Aleksander'), ['Elizabeta', 'Jurij', 'Jožef', 'Aleksander']),
+ (('Adam', 'Tadeja'), ['Adam', 'Matjaž', 'Viljem', 'Tadeja']),
+ (('Daniel', 'Ludvik'), ['Daniel', 'Elizabeta', 'Ludvik'])
+ ]
+
+ test_in = [('{0}{1}'.format(func_name, str(l[0])), None)
+ for l in in_out]
+ test_out = [l[1] for l in in_out]
+
+ answers = python(code=code, inputs=test_in, timeout=1.0)
+ n_correct = 0
+ tin, tout = None, None
+ for i, (ans, to) in enumerate(zip(answers, test_out)):
+ res = ans[0]
+ corr = res == to
+ n_correct += corr
+ if not corr:
+ tin = test_in[i][0]
+ tout = to
+
+ passed = n_correct == len(test_in)
+ hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_in)}}]
+ if tin:
+ hints.append({'id': 'problematic_test_case', 'args': {'testin': str(tin), 'testout': str(tout)}})
+ if passed:
+ hints.append({'id': 'final_hint'})
+
+ return passed, hints
+
+
+def hint(python, code):
+ tokens = get_tokens(code)
+
+ # run one test first to see if there are any exceptions
+ answer = python(code=code, inputs=[(None, None)], timeout=1.0)
+ exc = get_exception_desc(answer[0][3])
+ if exc: return exc
+
+ return None
diff --git a/python/problems/recursion/path_to/en.py b/python/problems/recursion/path_to/en.py
new file mode 100644
index 0000000..703d818
--- /dev/null
+++ b/python/problems/recursion/path_to/en.py
@@ -0,0 +1,13 @@
+id = 20805
+name = 'Family tree: path to'
+
+description = '''\
+<p>(translation missing)</p>'''
+
+hint = {
+ 'plan': '''\
+<p>(translation missing)</p>''',
+
+ 'no_input_call': '''\
+<p>(translation missing)</p>''',
+}
diff --git a/python/problems/recursion/path_to/sl.py b/python/problems/recursion/path_to/sl.py
new file mode 100644
index 0000000..b53bd26
--- /dev/null
+++ b/python/problems/recursion/path_to/sl.py
@@ -0,0 +1,30 @@
+import server
+mod = server.problems.load_language('python', 'sl')
+
+id = 20805
+name = 'Družinsko drevo: pot do'
+
+description = '''\
+<p>
+Reši podobno nalogo kot je prejšnja, le da naj funkcija ne vrne razdalje do
+določene osebe, temveč pot do nje. Uporabite družinsko
+drevo (<a target="_blank" href="[%@resource novak.png%]">slika</a> in
+<a target="_blank" href="[%@resource slovar.html%]">slovar</a>). </p>
+<pre>
+>>> pathto('Daniel', 'Hans')
+['Daniel', 'Hans']
+>>> pathto('Adam', 'Hans')
+['Adam', 'Daniel', 'Hans']
+>>> pathto('Adam', 'Franc')
+['Adam', 'Daniel', 'Elizabeta', 'Jurij', 'Franc']
+</pre>
+'''
+
+plan = []
+
+hint = {
+ 'final_hint': ['''\
+<p>Program je pravilen! <br>
+</p>
+'''],
+}