Write a program to compute the value of f(n) using the Fibonacci Sequence

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Question:

The Fibonacci Sequence is computed based on the following formula:

f(n)=0 if n=0
f(n)=1 if n=1
f(n)=f(n-1)+f(n-2) if n>1

Please write a program to compute the value of f(n) with a given n input by the console.

Example:

If the following n is given as input to the program: 7

Then, the output of the program should be: 13

In case of input data being supplied to the question, it should be assumed to be a console input.

Hints:

  • We can define recursive functions in Python.

Solution:

def f(n):
    if n == 0: return 0
    elif n == 1: return 1
    else: return f(n-1)+f(n-2)

n=int(raw_input())
print f(n)

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