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-2.py
+++ b/Task/Fibonacci-sequence/Python/fibonacci-sequence-2.py
@ -1,8 +1,10 @@
-def fibIter(n):
-    if n < 2:
-        return n
-    fibPrev = 1
-    fib = 1
-    for num in xrange(2, n):
-        fibPrev, fib = fib, fib + fibPrev
-    return fib
+from math import *
+
+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),