Find the Nth Fibonacci Number

📌 Video Title: Find the Nth Fibonacci Number | Leetcode Easy 🔥 | JavaScript Recursion & DP Explained

📃 Description:

Hey coders! 👋
In today’s video, we’re solving a classic LeetCode Easy problem — Find the Nth Fibonacci Number. Whether you’re prepping for interviews or building your DSA foundation in JavaScript, this problem is a must-know that covers recursion, memoization, and basic dynamic programming.

✅ Problem Statement:
Given an integer n, return the nth number in the Fibonacci sequence, where:
F(0) = 0, F(1) = 1, and F(n) = F(n - 1) + F(n - 2) for n greater than 1.
Sounds simple? We’ll explore both recursive and optimized dynamic programming approaches to handle larger inputs efficiently.

👨‍🏫 What You’ll Learn:

Understanding the Fibonacci sequence

Recursive solution and its limitations

Optimizing with memoization (top-down DP)

Iterative dynamic programming (bottom-up approach)

Clean JavaScript implementations

Time and space complexity explained

📌 Topics Covered:

Recursion in JavaScript

Memoization and Dynamic Programming

Time Complexity Analysis

Optimizing Recursive Functions

DSA for Beginners

🧠 Why This Problem?
Fibonacci numbers are more than a math problem — they’re a DSA gateway into recursion, dynamic programming, and optimization. This is also a frequent coding test question, so mastering it means faster solutions in interviews!

💡 Example Input: n = 8
💡 Output: 13 ✅

🔧 Language Used: JavaScript 💻

📁 Source Code: https://github.com/15akash/dsa/blob/master/recursion/nth-fibonacci/index.js

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Видео Find the Nth Fibonacci Number канала Akash Jindal