Answered: Create an algorithm in a linked list…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Transcribed Image Text:**Title: How to Remove Nodes with a Specific Key in a Linked List** **Problem Statement:** Create an algorithm in a linked list that will remove all nodes with the same key. **Introduction:** In this tutorial, we will guide you through developing an algorithm to effectively remove all nodes from a linked list that share a specific key. This is a common task in data structure management, particularly in scenarios where duplicate or redundant data needs to be eliminated. **Algorithm Overview:** 1. **Initialize Pointers:** - Use two pointers: `current` to traverse the list, and `previous` to track the node behind `current`. 2. **Traverse the List:** - Start from the head of the linked list and iterate through each node. 3. **Check for Key:** - At each node, check if the node's value matches the key. 4. **Remove Node:** - If a match is found: - Adjust pointers to bypass the node (i.e., set `previous.next` to `current.next`). - If removing the head, update the head pointer. - If no match, move the `previous` pointer to `current`. 5. **Continue Traversal:** - Move `current` to the next node. 6. **Edge Cases:** - Consider cases where the list is empty or all nodes match the key. **Example:** Imagine a linked list structured as follows: `10 -> 15 -> 10 -> 20 -> 10 -> 25` If we want to remove all nodes with the key `10`, the list should be updated to: `15 -> 20 -> 25` **Conclusion:** Implementing this algorithm ensures that you efficiently remove unwanted elements while maintaining the integrity of the linked list. Understanding these fundamental operations is crucial for mastering data structures and optimizing data management. **Further Reading:** For more advanced concepts and variations of linked list operations, explore our other resources and tutorials on linked list manipulation and optimization techniques.

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