mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-10-06 21:59:30 +00:00
26 lines
458 B
Python
26 lines
458 B
Python
from __future__ import print_function
|
|
|
|
def fibonacci(n):
|
|
if n == 1 or type(n) is not int:
|
|
return 0
|
|
elif n == 2:
|
|
return 1
|
|
else:
|
|
sequence = [0, 1]
|
|
for i in xrange(2, n+1):
|
|
sequence.append(sequence[i-1] + sequence[i-2])
|
|
|
|
return sequence[n]
|
|
|
|
def fibonacci_digits_index(n):
|
|
digits = 0
|
|
index = 2
|
|
|
|
while digits < n:
|
|
index += 1
|
|
digits = len(str(fibonacci(index)))
|
|
|
|
return index
|
|
|
|
if __name__ == '__main__':
|
|
print(fibonacci_digits_index(1000)) |