Files
python/exercises/collatz-conjecture/example.py
Marc Chan 16c4b394da collatz-conjecture: update tests to v1.2.0 (#1332)
* collatz-conjecture: update tests to v1.2.0

* collatz-conjecture: fix example to pass tests v1.2.0
2018-02-19 15:56:45 -06:00

18 lines
297 B
Python

def collatz_steps(n):
if n <= 0:
raise ValueError("input should be positive")
step_count = 0
while n > 1:
if is_odd(n):
n = n * 3 + 1
else:
n = n / 2
step_count += 1
return step_count
def is_odd(n):
return n % 2 == 1