How to Find Fibonacci Number Of A Given Index in JavaScript | Learn JavaScript & Algorithms
How to find fibonacci number of a given index in javascript? Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding numbers. We want to find the fibonacci number by providing it's index number. Write a function that finds the nth Fibonacci number.
For example if I use 3, I should get 2 as output. Because in fibonacci sequence, 2 is at index number 3. For 6, I should get 8. For 8, I should get 21. And so on.
Define a function that takes in a single parameter, "num". You can use a recursive approach to calculate the fibonacci sequence up to the given number. If the given number is less than or equal to 1, return that number. Otherwise, call function twice, once with the input decremented by 1 and once with the input decremented by 2, then add the two returned values together and return the result.
Call the function with an input, which will output the number in the Fibonacci sequence for the given index.
There is another way to do it. Define a function that takes in a single parameter "n". Initialize three variables "current" with value 0, "previous" with value 1 and "next" with value n. n is the input. "Current", "previous", and "next", will keep track of the current, previous and next Fibonacci number respectively.
The Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding ones, usually starting with 0 and 1. Use a for loop starting from 2 to n (n is 'given index number').
Reassign "next" as the sum of "current" and "previous", "current" as "previous" and "previous" as "next". Basically on each iteration, calculate the next Fibonacci number by adding "current" and "previous" together and assign it to "next". Then reassign "previous" to the value of "next" and "current" to the value of "previous". At the end of the loop, return the final value of next.
Call the function with an input, which would output the number in the Fibonacci sequence. So this is how we can find fibonacci number of a given index.
Our tutorials help you to improve your career growth, perform better in your job and make money online as a freelancer. Learn the skills to build and design professional websites, and create dynamic and interactive web applications using JavaScript, or WordPress. Our tutorials are tailored to help beginners and professionals alike. Whether you're just starting in the field or you're looking to expand your knowledge, we've got something for you. Join us on this journey to becoming a skilled web developer. Subscribe to our channel and let's get started!
Full Playlist (Coding Challenge, Interview Questions & Leetcode) *
• Challenge
It can be a good javascript interview question or frontend interview question. You may not be required to solve it on paper or whiteboard but the interviewer may ask you to give an idea on how to approach this algorithm. If you have an understanding of how to solve this problem or approach this algorithm, you will be able to answer it and get your next job as a frontend developer or full-stack developer.
Thank You!
👍 LIKE VIDEO
👊 SUBSCRIBE
🔔 PRESS BELL ICON
✍️ COMMENT
⚡Channel: / @webstylepress
⚡Website: https://www.webstylepress.com
⚡FaceBook: / webstylepress
⚡Twitter: / webstylepress
⚡GitHub: https://github.com/webstylepress
#fibonacci #js #javascript #challenge #codingchallenge #WebStylePress #WebDevelopment #javascriptinterviewquestions #javascripttutorial #leetcode #coding #programming #computerscience #algorithm
Смотрите видео How to Find Fibonacci Number Of A Given Index in JavaScript | Learn JavaScript & Algorithms онлайн без регистрации, длительностью часов минут секунд в хорошем качестве. Это видео добавил пользователь WebStylePress 31 Январь 2023, не забудьте поделиться им ссылкой с друзьями и знакомыми, на нашем сайте его посмотрели 634 раз и оно понравилось 6 людям.