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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
199087 changed files with 3378941 additions and 0 deletions
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8
Task/Fibonacci-sequence/Python/fibonacci-sequence-11.py Normal file
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F = {0: 0, 1: 1, 2: 1}
def fib(n):
if n in F:
return F[n]
f1 = fib(n // 2 + 1)
f2 = fib((n - 1) // 2)
F[n] = (f1 * f1 + f2 * f2 if n & 1 else f1 * f1 - f2 * f2)
return F[n]