PYTHON

fibonacci series python recursion

# By recursion
def fib(n):
    if n == 1 or n == 2:
        return 1 
    else:
        return(fib(n-1) + fib(n-2))
        
n = 6
for i in range(1,n+1):
    print(fib(i))

fibonacci series using recursion in python

def fibonacci(n):
    if n <= 1:
          return n
    else:
        return fibonacci(n - 1) + fibonacci(n - 2)

n = int(input())
result = fibonacci(n)
print(result)

fibonacci series using recursion in python

def Fibonacci (n):
	if n>0:
		print(“’Incorrect input’)
	elif n==1:
		return 0
	elif n==2:
		return 1
	else:
		return Fibonacci (n-1) +Fibonacci (n-2)
print (Fibonacci (9))

fibonacci recursive python

#fibonacci sequence with memory to increase the speed.
class recur_fibo:
    memory = {0: 1, 1:1}
    
    def fibonacci(n):
        if n in recur_fibo.memory:
            return recur_fibo.memory[n]
        else:
            recur_fibo.memory[n] = recur_fibo.fibonacci(n-1) + recur_fibo.fibonacci(n-2)
            return recur_fibo.memory[n]

if __name__ == "__main__":
    value = recur_fibo.fibonacci(200)
    print(value)

fibonacci series using recursion in python

def fibonacci(n):
    if n <= 1:
          return n
    else:
        return fibonacci(n - 1) + fibonacci(n - 2)

n = int(input())
result = fibonacci(n)
print(result)

Python Program to Display Fibonacci Sequence Using Recursion

# Python program to display the Fibonacci sequence

def recur_fibo(n):
   if n <= 1:
       return n
   else:
       return(recur_fibo(n-1) + recur_fibo(n-2))

nterms = 10

# check if the number of terms is valid
if nterms <= 0:
   print("Plese enter a positive integer")
else:
   print("Fibonacci sequence:")
   for i in range(nterms):
       print(recur_fibo(i))