diff options
Diffstat (limited to 'python/problems/lists_and_for/perfect_numbers')
-rw-r--r-- | python/problems/lists_and_for/perfect_numbers/common.py | 114 | ||||
-rw-r--r-- | python/problems/lists_and_for/perfect_numbers/en.py | 16 | ||||
-rw-r--r-- | python/problems/lists_and_for/perfect_numbers/sl.py | 96 |
3 files changed, 226 insertions, 0 deletions
diff --git a/python/problems/lists_and_for/perfect_numbers/common.py b/python/problems/lists_and_for/perfect_numbers/common.py new file mode 100644 index 0000000..c1c7645 --- /dev/null +++ b/python/problems/lists_and_for/perfect_numbers/common.py @@ -0,0 +1,114 @@ +# coding=utf-8 + +import re +from python.util import has_token_sequence, string_almost_equal, \ + string_contains_number, get_tokens, get_numbers, get_exception_desc +from server.hints import Hint + +id = 217 +group = 'lists_and_for' +number = 22 +visible = False + +solution = '''\ +n = int(input('Vnesi število: ')) +vsota = 0 +for i in range(1, n): + if n % i == 0: + vsota += i +if vsota == n: + print('Je popolno') +else: + print('Ni popolno') +''' + +hint_type = { + 'input_clause': Hint('input_clause'), + 'range_function': Hint('range_function'), + 'printing': Hint('printing'), + 'divisor': Hint('divisor'), + 'final_hint': Hint('final_hint'), + 'zero_division': Hint('zero_division'), + 'last_number': Hint('last_number'), + 'summing': Hint('summing'), +} + +def test(python, code): + test_in = [ + (None, '8\n'), + (None, '6\n'), + (None, '5\n'), + (None, '2\n'), + (None, '15\n'), + (None, '20\n'), + ] + test_out = [ + 7, + 6, + 1, + 1, + 9, + 22] + + # List of outputs: (expression result, stdout, stderr, exception). + answers = python(code=code, inputs=test_in, timeout=1.0) + outputs = [ans[1] for ans in answers] + + n_correct, tin = 0, None + for i, (output, result) in enumerate(zip(outputs, test_out)): + if result in get_numbers(output): + n_correct += 1 + else: + tin = test_in[i][1] + tout = result + + 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, '8\n')], timeout=1.0) + exc = get_exception_desc(answer[0][3]) + if exc: + if 'ZeroDivisionError' in answer[0][3]: + return [{'id' : 'zero_division', 'args': {'message': answer[0][3]}}] + else: + return exc + + # if has no input, tell him how to ask questions + if not has_token_sequence(tokens, ['input']): + return [{'id' : 'input_clause'}] + + # if it has no range, explain how we can create a list (generator) from a number + if not has_token_sequence(tokens, ['range']): + return [{'id' : 'range_function'}] + + # if it has no print function, tell him to use print + if not has_token_sequence(tokens, ['print']): + return [{'id' : 'printing'}] + + # if it has no divisoin-by-modulo operator, explain that operator + if not has_token_sequence(tokens, ['%']): + return [{'id' : 'divisor'}] + + # if the program prints 15 instead of 7, + # it means that is adds also itself + nums = get_numbers(answer[0][1]) + if 15 in nums and 7 not in nums: + return [{'id' : 'last_number'}] + + # if program prints only the last number or + # only the first number, explain how to sum + # elements in iterations + if 7 not in nums and \ + (1 in nums or 4 in nums or 8 in nums): + return [{'id' : 'summing'}] + + + return None diff --git a/python/problems/lists_and_for/perfect_numbers/en.py b/python/problems/lists_and_for/perfect_numbers/en.py new file mode 100644 index 0000000..19d5262 --- /dev/null +++ b/python/problems/lists_and_for/perfect_numbers/en.py @@ -0,0 +1,16 @@ +# coding=utf-8 + +id = 217 +name = 'Perfect number' +slug = 'Perfect number' + +description = '''\ +<p>(translation missing)</p>''' + +hint = { + 'plan': '''\ +<p>(translation missing)</p>''', + + 'no_input_call': '''\ +<p>(translation missing)</p>''', +} diff --git a/python/problems/lists_and_for/perfect_numbers/sl.py b/python/problems/lists_and_for/perfect_numbers/sl.py new file mode 100644 index 0000000..bc02d00 --- /dev/null +++ b/python/problems/lists_and_for/perfect_numbers/sl.py @@ -0,0 +1,96 @@ +# coding=utf-8 +import server +mod = server.problems.load_language('python', 'sl') + + +id = 217 +name = 'Popolna števila' +slug = 'Popolna števila' + + +description = '''\ +<p> Napiši program, ki izpiše "je popolno", če je podano število popolno, oz. +"ni popolno", če ni. Popolna števila so števila, ki so enaka vsoti svojih +deliteljev (brez samega sebe). Primer popolnega števila je 28, +saj so njegovi delitelji 1, 2, 4, 7, 14, njihova vsota, +1+2+4+7+14 pa je spet enaka 28. </p>''' + +input_clause = ['''\ +Uporabi funkcijo <code>input</code>. +'''] + +range_function = ['''\ +Uporabi funkcijo <code>range(a,b)</code> +''', + '''\ +<p>Funkcija <code>range(a, b)</code> pripravi seznam števil od a do števila b-1. Poskusi!</p>''', + '''\ +<p>Z zanko <code>for</code> se sprehodi čez elemente seznama oz. v našem primeru +čez vsa števila od <code>a</code> do <code>b-1</code>.</p> +'''] + +divisor = ['''\ +<p>Operator % vrne ostanek pri deljenju.</p>''', + '''\ +<pre> +>>> 5%3 +2 +>>> 17%8 +1 +</pre>''', + '''\ +<p>Če je ostanek pri deljenju števila <code>a</code> s številom <code>b</code> enak 0, potem <code>b</code> +deli število <code>a</code>. </p>''', + '''\ +<pre> +if a%b == 0: + # b je delitelj števila a +</pre> +'''] + +summing = ['''\ +<p>Če hočemo delitelje prišteti vsoti, moramo imeti vsoto nekje shranjeno. +Torej potrebujemo spremenljivko.</p>''', + '''\ +<p>Nekako tako: </p> +<pre> +vsota = 0 +for .... + if ... + vsota += d # d deli izbrano število +</pre>'''] + +plan = ['''\ +<p>Gre za praktično enako nalogo, kot je bila prejšnja. Le na koncu +moramo preveriti, če je vsota deliteljev enaka vnešenemu številu. </p> +'''] + + +hint = { + 'input_clause': input_clause, + + 'range_function': range_function, + + 'printing': ['''\ +<p>Izpiši rezultat.</p>'''], + + 'divisor': divisor, + + 'final_hint': ['''\ +<p>Naloga rešena! <br> +Podobno kot prejšnjo, lahko rešitev napišemo krajše: </p> +<pre> +n = int(input("Vpiši število: ")) +print(n == sum(i for i in range(1, n) if n % i == 0)) +</pre>'''], + + 'summing': summing, + + 'zero_division': [mod.general_msg['error_head'], + mod.general_msg['general_exception'], + '''\ +<p>Deljenje z nič ni dovoljeno!</p>''', + '''\ +<p>Računanje ostanka z operatorjem % je tudi deljenje.'''] + +} |