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Hands-On Data Structures and Algorithms with Python – Third Edition

You're reading from   Hands-On Data Structures and Algorithms with Python – Third Edition Store, manipulate, and access data effectively and boost the performance of your applications

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Product type Paperback
Published in Jul 2022
Publisher Packt
ISBN-13 9781801073448
Length 496 pages
Edition 3rd Edition
Languages
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Author (1):
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Dr. Basant Agarwal Dr. Basant Agarwal
Author Profile Icon Dr. Basant Agarwal
Dr. Basant Agarwal
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Toc

Table of Contents (17) Chapters Close

Preface 1. Python Data Types and Structures FREE CHAPTER 2. Introduction to Algorithm Design 3. Algorithm Design Techniques and Strategies 4. Linked Lists 5. Stacks and Queues 6. Trees 7. Heaps and Priority Queues 8. Hash Tables 9. Graphs and Algorithms 10. Searching 11. Sorting 12. Selection Algorithms 13. String Matching Algorithms 14. Other Books You May Enjoy
15. Index
Appendix: Answers to the Questions

The brute force algorithm

The brute force algorithm is also called the naive approach to pattern matching algorithms. Naive approach means that it is a very basic and simple algorithm. In this approach, we match all the possible combinations of the input pattern in the given text string to find the position of the occurrence of the pattern. This algorithm is very naive and is not suitable if the text is very long.

In this algorithm, we start by comparing the characters of the pattern string and the text string one by one, and if all the characters of the pattern are matched with the text, we return the index position of the text where the first character of the pattern is located. If any character of the pattern is mismatched with the text string, we shift the pattern by one position to check if the pattern appears at the next index position. We continue comparing the pattern and text string by shifting the pattern by one index position.

To better understand how the brute...

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