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@alanduan
Created December 13, 2016 01:00
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nth fibonacci
import unittest
class FibonacciTest(unittest.TestCase):
def test_sequence(self):
self.assertEqual(fibonacci_nth(0), 0)
self.assertEqual(fibonacci_nth(1), 1)
self.assertEqual(fibonacci_nth(2), 1)
self.assertEqual(fibonacci_nth(3), 2)
self.assertEqual(fibonacci_nth(4), 3)
self.assertEqual(fibonacci_nth(5), 5)
self.assertEqual(fibonacci_nth(6), 8)
def test_LargerValue(self):
self.assertEqual(fibonacci_nth(100), 354224848179261915075)
def fibonacci_generator():
a = 0
b = 1
while True:
yield a
a, b = b, a + b
def fibonacci_nth(n):
for i, v in enumerate(fibonacci_generator()):
if i == n:
return v
if __name__ == '__main__':
unittest.main()
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