Nth Node from End of Linked List | Brute Force & Two Pointer Approach | Java, Python & C++
In this video, we'll solve the Nth Node from the End of Linked List problem using both the Brute Force and Optimal Two Pointer approaches. This is one of the most important Linked List interview questions and introduces a powerful pointer technique used in many coding interviews.
Brute Force Approach Explained
Two Pointer (Fast & Slow Pointer) Approach
Step-by-Step Dry Run
Edge Cases and Interview Tips
Time & Space Complexity Analysis
The Two Pointer approach is a must-know technique for Linked List problems and is frequently asked in interviews at top product-based companies.
Complexity Analysis:
✅ Brute Force Approach
• Time Complexity: O(2n) ≈ O(n)
• Space Complexity: O(1)
✅ Two Pointer Approach
• Time Complexity: O(n)
• Space Complexity: O(1)
Rising Brain (DSA Sheet):
https://www.risingbrain.org/sheet
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