Скачать или смотреть Fibonacci Series Full Explanation | Find Nth Fibonacci Number | Recursion to Optimization

In this video, we solve the “Nth Fibonacci Number” problem step by step — one of the most popular questions in Mathematical Logic, DSA, and Coding Interviews.

Given a non-negative integer n, your task is to find the nth Fibonacci number.

The Fibonacci sequence is a sequence where the next term is the sum of the previous two terms. The first two terms of the Fibonacci sequence are 0 followed by 1. The Fibonacci sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21


We explore three different approaches to find the Nth Fibonacci number efficiently:
1️⃣ Recursive Approach (Naive - O(2ⁿ) Time)
2️⃣ Dynamic Programming using ArrayList (O(n) Time, O(n) Space)
3️⃣ Optimized Iterative Approach (O(n) Time, O(1) Space)

This video helps you build deep understanding of recursion, DP tabulation, and space optimization — fundamental ideas that appear in many interview problems.

Key Concepts Covered
Fibonacci Series Logic
Recursion and Base Case
Dynamic Programming (Tabulation)
Space Optimization
Java Implementation
Time and Space Complexity Analysis
Mathematical Pattern Insight

Use Cases / Topics
This question is frequently asked in:
Coding Interviews
DSA Foundations
Dynamic Programming Beginner Topics
Math-Based Logic Problems


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