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Then I show the optimized approach using two pointers in Java. Finally, I explain the time and space complexity in simple words.

Learn how to solve LeetCode Problem 206 – Reverse Linked List using the In-Place Reversal Pattern. In this video, we'll ...

This article explores the fundamental architectural differences between pointers in C/C++ and references in Java, interpreting ...

In this video, we explain how to delete the first node of a Doubly Linked List step by step. You'll learn how to correctly update the ...

In this video, we explain how to insert a node at the beginning of a Doubly Linked List in a simple and structured way. You'll learn ...

In this video, we explain how to delete the last node of a Doubly Linked List step by step. You'll learn how to safely update the ...

In this video, we explain the DSA problem "Max Consecutive Ones III" using the Sliding Window technique. Problem: Given a ...

In this video, we solve LeetCode 840 — Magic Squares in Grid.