Created
June 21, 2010 17:26
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-module(raetsel). | |
-export([zahl_an_stelle/1]). | |
zahl_an_stelle(STELLE) -> | |
zahl_an_stelle(STELLE, 1,0). | |
zahl_an_stelle(STELLE, ZAEHLER, SUMME) -> | |
if | |
SUMME >= STELLE | |
-> ZAEHLER-1; | |
true | |
-> zahl_an_stelle(STELLE, ZAEHLER+1, SUMME+ZAEHLER) | |
end. |
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class Raetsel(): | |
def zahlAnStelle(self, stelle): | |
"""122333444455555666666...""" | |
summe = 0 | |
zaehler = 0 | |
while (summe < stelle): | |
zaehler += 1 | |
summe += zaehler | |
return zaehler | |
if __name__ == '__main__': | |
r = Raetsel() | |
print "Zahl an Stelle 1.000.000: ", | |
print r.zahlAnStelle(1000000) |
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from raetsel import Raetsel | |
import unittest | |
class RaetselTests(unittest.TestCase): | |
def setUp(self): | |
self.r = Raetsel() | |
def test_01_ersteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(1), 1) | |
def test_02_zweiteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(2), 2) | |
def test_03_dritteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(3), 2) | |
def test_04_vierteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(4), 3) | |
def test_05_fuenfteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(5), 3) | |
def test_06_sechsteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(6), 3) | |
def test_07_siebteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(7), 4) | |
def test_08_einundzwanzigsteStelle(self): | |
self.assertEqual(self.r.zahlAnStelle(21), 6) | |
if __name__ == '__main__': | |
unittest.main() |
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