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Beginning Algorithms

Beginning Algorithms

Simon Harris, James Ross

ISBN: 978-0-471-78383-1

Nov 2005

600 pages



Beginning Algorithms

A good understanding of algorithms, and the knowledge of when to apply them, is crucial to producing software that not only works correctly, but also performs efficiently. This is the only book to impart all this essential information-from the basics of algorithms, data structures, and performance characteristics to the specific algorithms used in development and programming tasks.

Packed with detailed explanations and instructive examples, the book begins by offering you some fundamental data structures and then goes on to explain various sorting algorithms. You'll then learn efficient practices for storing and searching by way of hashing, trees, sets, and maps. The authors also share tips on optimization techniques and ways to avoid common performance pitfalls. In the end, you'll be prepared to build the algorithms and data structures most commonly encountered in day-to-day software development.

What you will learn from this book

  • The basics of algorithms, such as iteration and recursion
  • Elementary data structures such as lists, stacks, and queues
  • Basic and advanced sorting algorithms including insertion sort, quicksort, and shell sort
  • Advanced data structures such as binary trees, ternary trees, and heaps
  • Algorithms for string searching, string matching, hashing, and computational geometry
  • How to use test-driven development techniques to ensure your code works as intended
  • How to dramatically improve the performance of your code with hands-on techniques for profiling and optimization

Who this book is for

This book is for anyone who develops applications, or is just beginning to do so, and is looking to understand algorithms and data structures. An understanding of computer programming is beneficial.

Wrox Beginning guides are crafted to make learning programming languages and technologies easier than you think, providing a structured, tutorial format that will guide you through all the techniques involved.



Chapter 1: Getting Started.

Chapter 2: Iteration and Recursion.

Chapter 3: Lists.

Chapter 4: Queues.

Chapter 5: Stacks.

Chapter 6: Basic Sorting.

Chapter 7: Advanced Sorting.

Chapter 8: Priority Queues.

Chapter 9: Binary Searching and Insertion.

Chapter 10: Binary Search Trees.

Chapter 11: Hashing.

Chapter 12: Sets.

Chapter 13: Maps.

Chapter 14: Ternary Search Trees.

Chapter 15: B-Trees.

Chapter 16: String Searching.

Chapter 17: String Matching.

Chapter 18: Computational Geometry.

Chapter 19: Pragmatic Optimization.

Appendix A: Further Reading.

Appendix B: Resources.

Appendix C: Bibliography.

Appendix D: Answers to Exercises.


Code Downloads
Code downloads for this title are available here.
ChapterPageDetailsDatePrint Run
5Line Labeled Incorrectly
Figure 1-1:

The straight, horizontal (as opposed to the diagonal) line should be O(1);
it's incorrectly labelled as O(N).

9Error in Values
"As you can see, for values of N up to and including N=2"

should be:

"As you can see, for values of N up to and including N=3"

13Error in Text
Paragraph 3:

should be:

paragraph 4:

should be:

16Missing Symbols
32 = 3 x 3 = 9 and 106 = 10 x 10 x 10 x 10 x 10 x 10 = 1,000,000 should be: 3^2 = 3 x 3 = 9 and 10^6 = 10 x 10 x 10 x 10 x 10 x 10 = 1,000,000

24Error in Code
1st Code block, 4th line of code:
private final int _start;

Should be:
private final int _first;


5th line of code: private final int _end;

Should be:
private final int _last;

255Error in Text
Paragraph 3:

"The only method you tested was delete()."

Should read:

"The only other method you tested was delete()."

403Error in Text
Paragraph 3:

"The original Boyer-Moore algorithm actually makes use of the heuristic suffix."

Should read:

"The original Boyer-Moore algorithm actually makes use of another – good-suffix – heuristic."

413Error in Text
Table 16-1:

The last column "% difference" doesn't make sense.
It should read "Relative number of comparisons (%)"