how to create fibonacci sequence in python
#Python program to generate Fibonacci series until 'n' value
n = int(input("Enter the value of 'n': "))
a = 0
b = 1
sum = 0
count = 1
print("Fibonacci Series: ", end = " ")
while(count <= n):
print(sum, end = " ")
count += 1
a = b
b = sum
sum = a + bfibonacci sequence python
# WARNING: this program assumes the
# fibonacci sequence starts at 1
def fib(num):
"""return the number at index `num` in the fibonacci sequence"""
if num <= 2:
return 1
return fib(num - 1) + fib(num - 2)
# method 2: use `for` loop
def fib2(num):
a, b = 1, 1
for _ in range(num - 1):
a, b = b, a + b
return a
print(fib(6)) # 8
print(fib2(6)) # same result, but much fasterfibonacci python
# Implement the fibonacci sequence
# (0, 1, 1, 2, 3, 5, 8, 13, etc...)
def fib(n):
if n== 0 or n== 1:
return n
return fib (n- 1) + fib (n- 2)python fibonacci
def Fibonacci( pos ):
#check for the terminating condition
if pos <= 1 :
#Return the value for position 1, here it is 0
return 0
if pos == 2:
#return the value for position 2, here it is 1
return 1
#perform some operation with the arguments
#Calculate the (n-1)th number by calling the function itself
n_1 = Fibonacci( pos-1 )
#calculation the (n-2)th number by calling the function itself again
n_2 = Fibonacci( pos-2 )
#calculate the fibo number
n = n_1 + n_2
#return the fibo number
return n
#Here we asking the function to calculate 5th Fibonacci
nth_fibo = Fibonacci( 5 )
print (nth_fibo)fibonacci sequence python
# WARNING: this program assumes the
# fibonacci sequence starts at 1
def fib(num):
"""return the number at index num in the fibonacci sequence"""
if num <= 2:
return 1
return fib(num - 1) + fib(num - 2)
print(fib(6)) # 8fibonacci numbers in python
import numpy as np
lmbd_1 = (1+np.sqrt(5))/2
lmbd_2 = (1-np.sqrt(5))/2
a = np.matrix([[1, 1], [1, 0]])
s = np.matrix([[lmbd_1, lmbd_2], [1, 1]])
s_inv = np.matrix([[1, -lmbd_2], [-1, lmbd_1]]) * (1/np.sqrt(5))
eig_val = np.matrix([[lmbd_1, 0], [0, lmbd_2]])
u_0 = np.matrix([[1], [0]])
def eig_k(k):
return eig_val ** k
def u_k(k):
return s * eig_k(k) * s_inv * u_0
def fib(n):
f_n = u_k(n)[1,0]
return int(round(f_n))
[fib(n) for n in range(15)]Copyright © 2021 Codeinu
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