Problem 3092. Return fibonacci sequence do not use loop and condition

Created by Binbin Qi
Appears in Cody Problems in Japanese

Difficulty:Rate

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Calculate the nth Fibonacci number.
Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ...
Examples:
 Input  n = 5
 Output f is 5
 Input  n = 7
 Output f is 13
but, loop and conditional statement is forbidden

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2533 Solutions
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Last Solution submitted on Apr 26, 2025

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Miroslav Popovic on 4 Feb 2022

It does require understanding of linear reccurence relations with constant coefficients. Interesting problem overall

Tran Tran on 20 Mar 2022

Hint Instead using round which is forbidden.Try cast to other data types guys ( ͡° ͜ʖ ͡°)

Lam Thai Nguyen on 28 Dec 2023

you can use golden ratio for this problem.

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