Please explain The Fibonacci sequence is defined as 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...The first two terms, f(0) and f(1), are equal to 1. Every subsequent term is the sum of thetwoprevious terms. Thus for each n≥2n22, we have f(n)=f(n-1)+f(n-2).Here are two Python programs to calculate f(n)f(n). One of these two methods usesbottom-up dynamic programming and one of these two methods uses recursion. But whichone is which?def fib1(n):if n<=1: return 1else: return fib1(n-1)+fib1(n-2)def fib2(n):table[ for i in range(n+1)]for i in range(n+1):if i=1: table[i]=1else: table[i]=table[i-1]+table[i-2]return table[n]BCA-Looking at the program fragment, which of these is based on dynamicprogramming?Your answer should be written as: fib1 or fib2

Given :- In the above question, the code in python is mention in the above given question Need to…

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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Please explain

The Fibonacci sequence is defined as 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...
The first two terms, f(0) and f(1), are equal to 1. Every subsequent term is the sum of the
two
previous terms. Thus for each n≥2n22, we have f(n)=f(n-1)+f(n-2).
Here are two Python programs to calculate f(n)f(n). One of these two methods uses
bottom-up dynamic programming and one of these two methods uses recursion. But which
one is which?
def fib1(n):
if n<=1: return 1
else: return fib1(n-1)+fib1(n-2)
def fib2(n):
table
[ for i in range(n+1)]
for i in range(n+1):
if i=1: table[i]=1
else: table[i]=table[i-1]+table[i-2]
return table[n]
BCA-
Looking at the program fragment, which of these is based on dynamic
programming?
Your answer should be written as: fib1 or fib2

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