Kirupa Chinnathambi

Absolute Beginner's Guide to Algorithms (eBook, PDF)

A Practical Introduction to Data Structures and Algorithms in JavaScript

• Format: PDF

Produktbeschreibung

A hands-on, easy-to-comprehend guide that is perfect for anyone who needs to understand algorithms.

With the explosive growth in the amount of data and the diversity of computing applications, efficient algorithms are needed now more than ever. Programming languages come and go, but the core of programming--algorithms and data structures--remains the same.



Absolute Beginner's Guide to Algorithms is the fastest way to learn algorithms and data structures. Using helpful diagrams and fully annotated code samples in Javascript, you will start with the basics and gradually go deeper and broader into all the techniques you need to organize your data.

• Start fast with data structures basics: arrays, stacks, queues, trees, heaps, and more
• Walk through popular search, sort, and graph algorithms
• Understand Big-O notation and why some algorithms are fast and why others are slow
• Balance theory with practice by playing with the fully functional JavaScript implementations of all covered data structures and algorithms

Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

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Produktdetails

• Verlag: Pearson ITP
• Altersempfehlung: ab 18 Jahre
• Erscheinungstermin: 8. Dezember 2023
• Englisch
• ISBN-13: 9780138222437
• Artikelnr.: 69837160

Autorenporträt

Kirupa Chinnathambi has spent most of his life teaching others to love web development as much as he does. He founded KIRUPA, one of the Web's most popular free web development education resources, serving 210,000+ registered members. Now a product manager at Google, he has authored several books, including Learning React (2017). He holds a B.S. in computer science from MIT.

Inhaltsangabe

Part I: Data Structures
 
Chapter 1. Introduction to Data Structures
.................................................................. 1
     Right Tool for the Right Job
....................................................................................
2
     Back to Data Structures
...........................................................................................
5
     Conclusion
.................................................................................................................
6
 
Chapter 2. Big-O Notation and Complexity Analysis
................................................... 7
     It's Example Time
......................................................................................................
8
     It's Big-O Notation Time!
.......................................................................................11
     Conclusion
...............................................................................................................15
 
Chapter 3. Arrays
.......................................................................................................
17
     What Is an Array?
....................................................................................................18
     Array Implementation / Use Cases
.......................................................................24
     Arrays and Memory
................................................................................................26
     Performance Considerations
.................................................................................30
     Conclusion
...............................................................................................................32
 
Chapter 4. Linked Lists
...............................................................................................
35
     Meet the Linked List
...............................................................................................36
     Linked List: Time and Space Complexity
.............................................................40
     Linked List Variations
..............................................................................................41
     Implementation
.......................................................................................................44
     Conclusion
...............................................................................................................52
 
Chapter 5. Stacks
........................................................................................................
53
     Meet the Stack
........................................................................................................54
     A JavaScript Implementation
................................................................................56
     Stacks: Time and Space Complexity
....................................................................58
     Conclusion
...............................................................................................................59
 
Chapter 6. Queues
.....................................................................................................
61
     Meet the Queue
.....................................................................................................62
     A JavaScript Implementation
................................................................................64
     Queues: Time and Space Complexity
..................................................................66
     Conclusion
...............................................................................................................67
 
Chapter 7. Trees
.........................................................................................................
69
     Trees 101
.................................................................................................................70
     Height and Depth
...................................................................................................75
     Conclusion
...............................................................................................................77
 
Chapter 8. Binary Trees
..............................................................................................
79
     Meet the Binary Tree
..............................................................................................80
     A Simple Binary Tree Implementation
..................................................................86
     Conclusion
...............................................................................................................89
 
Chapter 9. Binary Search Trees
...................................................................................
91
     It's Just a Data Structure
........................................................................................93
     Implementing a Binary Search Tree
....................................................................103
     Performance and Memory Characteristics
.........................................................110
     Conclusion
.............................................................................................................112
 
Chapter 10. Heaps
......................................................................................................
113
     Meet the Heap
......................................................................................................114
     Heap Implementation
..........................................................................................126
     Performance Characteristics
................................................................................132
     Conclusion
.............................................................................................................134
 
Chapter 11. Hashtable (aka Hashmap or Dictionary)
.................................................. 137
     A Very Efficient Robot
..........................................................................................138
     From Robots to Hashing Functions
....................................................................142
     From Hashing Functions to Hashtables
.............................................................145
     JavaScript Implementation/Usage
......................................................................148
     Dealing with Collisions
.........................................................................................150
     Performance and Memory
...................................................................................151
     Conclusion
.............................................................................................................153
 
Chapter 12. Trie (aka Prefix Tree)
...............................................................................
155
     What Is a Trie?
......................................................................................................156
     Diving Deeper into Tries
......................................................................................167
     Many More Examples Abound!
..........................................................................172
     Implementation Time
...........................................................................................173
     Performance
..........................................................................................................179
     Conclusion
.............................................................................................................181
 
Chapter 13. Graphs
....................................................................................................
183
     What Is a Graph?
..................................................................................................184
     Graph Implementation
.........................................................................................190
     Conclusion
.............................................................................................................196
 
Part II: Algorithms
 
Chapter 14. Introduction to Recursion
....................................................................... 199
     Our Giant Cookie Problem
..................................................................................200
     Recursion in Programming
..................................................................................202
     Conclusion
.............................................................................................................206
 
Chapter 15. Fibonacci and Going Beyond Recursion
................................................. 207
     Recursively Solving the Fibonacci Sequence
....................................................209
     Recursion with Memoization
...............................................................................213
     Taking an Iteration-Based Approach
..................................................................215
     Going Deeper on the Speed
..............................................................................217
     Conclusion
.............................................................................................................218
 
Chapter 16. Towers of Hanoi
......................................................................................
221
     How Towers of Hanoi Is Played
..........................................................................222
     The Single Disk Case
...........................................................................................223
     It's Two Disk Time
.................................................................................................224
     Three Disks
............................................................................................................225
     The Algorithm
.......................................................................................................228
     The Code Solution
...............................................................................................229
     Check Out the Recursiveness!
............................................................................231
     It's Math Time
........................................................................................................232
     Conclusion
.............................................................................................................234
 
Chapter 17. Search Algorithms and Linear Search
..................................................... 235
     Linear Search
.........................................................................................................236
     Conclusion
.............................................................................................................241
 
Chapter 18. Faster Searching with Binary Search
....................................................... 243
     Binary Search in Action
........................................................................................243
     The JavaScript Implementation
..........................................................................250
     Runtime Performance
...........................................................................................254
     Conclusion
.............................................................................................................257
 
Chapter 19. Binary Tree Traversal
...............................................................................
259
     Breadth-First Traversal
..........................................................................................260
     Depth-First Traversal
............................................................................................265
     Implementing Our Traversal Approaches
..........................................................270
     Performance of Our Traversal Approaches
........................................................278
     Conclusion
.............................................................................................................279
 
Chapter 20. Depth-First Search (DFS) and Breadth-First Search (BFS)
....................... 281
     A Tale of Two Exploration Approaches
..............................................................282
     It's Example Time
..................................................................................................285
     When to Use DFS? When to Use BFS?
..............................................................298
     A JavaScript Implementation
..............................................................................300
     Performance Details
.............................................................................................307
     Conclusion
.............................................................................................................308
 
Chapter 21. Quicksort
................................................................................................
309
     A Look at How Quicksort Works
.........................................................................310
     Another Simple Look
...........................................................................................314
     It's Implementation Time
.....................................................................................319
     Performance Characteristics
................................................................................322
     Conclusion
.............................................................................................................323
 
Chapter 22. Bubblesort
..............................................................................................
325
     How Bubblesort Works
........................................................................................326
     Walkthrough
..........................................................................................................329
     The Code
...............................................................................................................333
     Conclusion
.............................................................................................................333
 
Chapter 23. Insertion Sort
..........................................................................................
335
     How Insertion Sort Works
....................................................................................336
     One More Example
..............................................................................................347
     Algorithm Overview and Implementation
.........................................................349
     Performance Analysis
...........................................................................................351
     Conclusion
.............................................................................................................353
 
Chapter 24. Selection Sort
.........................................................................................
355
     Selection Sort Walkthrough
.................................................................................356
     Algorithm Deep Dive
...........................................................................................364
     The JavaScript Implementation
..........................................................................366
     Conclusion
.............................................................................................................369
 
Chapter 25. Mergesort
...............................................................................................
371
     How Mergesort Works
.........................................................................................372
     Mergesort: The Algorithm Details
......................................................................379
     Looking at the Code
............................................................................................380
     Conclusion
.............................................................................................................381
 
Conclusion
.................................................................................................................383
 
Index
............................................................................................................................
387