September 2017 Update

2017-09-23 10:01:46 +02:00 · 2017-09-23 10:01:46 +02:00 · ba8067c3b7
commit ba8067c3b7
parent bba7bfd280
14570 changed files with 153136 additions and 63871 deletions
--- a/Task/Fibonacci-sequence/Python/fibonacci-sequence-1.py
+++ b/Task/Fibonacci-sequence/Python/fibonacci-sequence-1.py
@ -1,10 +1,5 @@
-from math import *
+def fib(n,x=[0,1]):
+   for i in range(abs(n)-1): x=[x[1],sum(x)]
+   return x[1]*pow(-1,abs(n)-1) if n<0 else x[1] if n else 0

-def analytic_fibonacci(n):
-  sqrt_5 = sqrt(5);
-  p = (1 + sqrt_5) / 2;
-  q = 1/p;
-  return int( (p**n + q**n) / sqrt_5 + 0.5 )
-
-for i in range(1,31):
-  print analytic_fibonacci(i),
+for i in range(-30,31): print fib(i),