This notebook was prepared by Donne Martin. Source and license info is on GitHub.
Refer to the Solution Notebook. If you are stuck and need a hint, the solution notebook's algorithm discussion might be a good place to start.
class Solution(object):
def is_power_of_two(self, val):
# TODO: Implement me
pass
The following unit test is expected to fail until you solve the challenge.
# %load test_is_power_of_two.py
import unittest
class TestSolution(unittest.TestCase):
def test_is_power_of_two(self):
solution = Solution()
self.assertRaises(TypeError, solution.is_power_of_two, None)
self.assertEqual(solution.is_power_of_two(0), False)
self.assertEqual(solution.is_power_of_two(1), True)
self.assertEqual(solution.is_power_of_two(2), True)
self.assertEqual(solution.is_power_of_two(15), False)
self.assertEqual(solution.is_power_of_two(16), True)
print('Success: test_is_power_of_two')
def main():
test = TestSolution()
test.test_is_power_of_two()
if __name__ == '__main__':
main()
Review the Solution Notebook for a discussion on algorithms and code solutions.