mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-24 13:31:07 +00:00
38 lines
872 B
Python
38 lines
872 B
Python
"""
|
|
Problem:
|
|
Each new term in the Fibonacci sequence is generated by adding the previous two
|
|
terms. By starting with 1 and 2, the first 10 terms will be:
|
|
|
|
1,2,3,5,8,13,21,34,55,89,..
|
|
|
|
By considering the terms in the Fibonacci sequence whose values do not exceed
|
|
n, find the sum of the even-valued terms. e.g. for n=10, we have {2,8}, sum is
|
|
10.
|
|
"""
|
|
def solution(n):
|
|
"""Returns the sum of all fibonacci sequence even elements that are lower
|
|
or equals to n.
|
|
|
|
>>> solution(10)
|
|
[2, 8]
|
|
>>> solution(15)
|
|
[2, 8]
|
|
>>> solution(2)
|
|
[2]
|
|
>>> solution(1)
|
|
[]
|
|
>>> solution(34)
|
|
[2, 8, 34]
|
|
"""
|
|
ls = []
|
|
a, b = 0, 1
|
|
while b <= n:
|
|
if b % 2 == 0:
|
|
ls.append(b)
|
|
a, b = b, a + b
|
|
return ls
|
|
|
|
|
|
if __name__ == "__main__":
|
|
print(solution(int(input().strip())))
|