数据结构与程序设计 C++语言描述 英文PDF电子书下载

1 Programming Principles 1

1.1 Introduction 2

1.2 The Game of Life 4

1.2.1 Rules for the Game of Life 4

1.2.2 Examples 5

1.2.3 The Solution:Classes,Objects,and Methods 7

1.2.4 Life:The Main Program 8

1.3 Programming Style 10

1.3.1 Names 10

1.3.2 Documentation and Format 13

1.3.3 Refinement and Modularity 15

1.4.1 Stubs 20

1.4 Coding,Testing,and Further Refinement 20

1.4.2 Definition of the Class Life 22

1.4.3 Counting Neighbors 23

1.4.4 Updating the Grid 24

1.4.5 Input and Output 25

1.4.6 Drivers 27

1.4.7 Program Tracing 28

1.4.8 Principles of Program Testing 29

1.5 Program Maintenance 33

1.5.1 Program Evaluation 34

1.5.2 Review of the Life Program 35

1.5.3 Program Revision and Redevelopment 38

1.6.1 Software Engineering 39

1.6 Conclusions and Preview 39

1.6.2 Problem Analysis 40

1.6.3 Requirements Specification 41

1.6.4 Coding 41

Pointers and Pitfalls 45

Review Questions 46

References for Further Study 47

C++ 47

Programming principles 47

The Game of Life 47

Software Engineering 48

2 Introduction to Stacks 49

2.1.2 Stacks 50

2.1 Stack Specifications 50

2.1.1 Lists and Arrays 50

2.1.3 First Example:Reversing a List 51

2.1.4 Information Hiding 54

2.1.5 The Standard Template Library 55

2.2 Implementation of Stacks 57

2.2.1 Specification of Methods for Stacks 57

2.2.2 The Class Specification 60

2.2.3 Pushing,Popping and Other Methods 61

2.2.4 Encapsulation 63

2.3 Application:A Desk Calculator 66

2.4 Application:Bracket Matching 69

2.5.1 Introduction 71

2.5 Abstract Data Types and Their Implementations 71

2.5.2 General Definitions 73

2.5.3 Refinement of Data Specification 74

Pointers and Pitfalls 76

Review Questions 76

References for Further Study 77

3 Queues 78

3.1 Definitions 79

3.1.1 Queue Operations 79

3.1.2 Extended Queue Operations 81

3.2 Implementations of Queues 84

3.3 Circular Implementation of Queues in C++ 89

3.4 Demonstration and Testing 93

3.5.2 Simulation of an Airport 96

3.5 Application of Queues:Simulation 96

3.5.1 Introduction 96

3.5.3 Random Numbers 99

3.5.4 The Runway Class Specification 99

3.5.5 The Plane Class Specification 100

3.5.6 Functions and Methods of the Simulation 101

3.5.7 Sample Results 107

Pointers and Pitfalls 110

Review Questions 110

References for Further Study 111

4 Linked Stacks and Queues 112

4.1.1 Introduction and Survey 113

4.1 Pointers and Linked Structures 113

4.1.2 Pointers and Dynamic Memory in C++ 116

4.1.3 The Basics of Linked Structures 122

4.2 Linked Stacks 127

4.3 Linked Stacks with Safeguards 131

4.3.1 The Destructor 131

4.3.2 Overloading the Assignment Operator 132

4.3.3 The Copy Constructor 135

4.3.4 The Modified Linked-Stack Specification 136

4.4 Linked Queues 137

4.4.1 Basic Declarations 137

4.4.2 Extended Linked Queues 139

4.5.2 The Main Program 141

4.5 Application:Polynomial Arithmetic 141

4.5.1 Purpose of the Project 141

4.5.3 The Polynomial Data Structure 144

4.5.4 Reading and Writing Polynomials 147

4.5.5 Addition of Polynomials 148

4.5.6 Completing the Project 150

4.6 Abstract Data Types and Their Implementations 152

Pointers and Pitfalls 154

Review Questions 155

5 Recursion 157

5.1.1 Stack Frames for Subprograms 158

5.1 Introduction to Recursion 158

5.1.2 Tree of Subprogram Calls 159

5.1.3 Factorials:A Recursive Definition 160

5.1.4 Divide and Conquer:The Towers of Hanoi 163

5.2 Principles of Recursion 170

5.2.1 Designing Recursive Algorithms 170

5.2.2 How Recursion Works 171

5.2.3 Tail Recursion 174

5.2.4 When Not to Use Recursion 176

5.2.5 Guildelines and Conclusions 180

5.3 Backtracking:Postponing the Work 183

5.3.1 Solving the Eight-Queens Puzzle 183

5.3.2 Example:Four Queens 184

5.3.3 Backtracking 185

5.3.4 Overall Outline 186

5.3.5 Refinement:The First Data Structure and Its Methods 188

5.3.6 Review and Refinement 191

5.3.7 Analysis of Backtracking 194

5.4 Tree-Structured Programs:Look-Ahead in Games 198

5.4.1 Game Trees 198

5.4.2 The Minimax Method 199

5.4.3 Algorithm Development 201

5.4.4 Refinement 203

5.4.5 Tic-Tac-Toe 204

Pointers and Pitfalls 209

Review Questions 210

References for Further Study 211

6 Lists and Strings 212

6.1 List Definition 213

6.1.1 Method Specifications 214

6.2 Implementation of Lists 217

6.2.1 Class Templates 218

6.2.2 Contiguous Implementation 219

6.2.3 Simply Linked Implementation 221

6.2.4 Variation:Keeping the Current Position 225

6.2.5 Doubly Linked Lists 227

6.2.6 Comparison of Implementations 230

6.3.1 Strings in C++ 233

6.3 Strings 233

6.3.2 Implementation of Strings 234

6.3.3 Further String Operations 238

6.4 Application:A Text Editor 242

6.4.1 Specifications 242

6.4.2 Implementation 243

6.5 Linked Lists in Arrays 251

6.6 Application:Generating Permutations 260

Pointers and Pitfalls 265

Review Questions 266

References for Further Study 267

7 Searching 268

7.1 Searching:Introduction and Notation 269

7.2 Sequential Search 271

7.3 Binary Search 278

7.3.1 Ordered Lists 278

7.3.2 Algorithm Development 280

7.3.3 The Forgetful Version 281

7.3.4 Recognizing Equality 284

7.4 Comparison Trees 286

7.4.1 Analysis for n=10 287

7.4.2 Generalization 290

7.4.3 Comparison of Methods 294

7.4.4 A General Relationship 296

7.5 Lower Bounds 297

7.6 Asymptotics 302

7.6.1 Introduction 302

7.6.2 Orders of Magnitude 304

7.6.3 The Big-O and Related Notations 310

7.6.4 Keeping the Dominant Term 311

Pointers and Pitfalls 314

Review Questions 315

References for Further Study 316

8 Sorting 317

8.1 Introduction and Notation 318

8.1.1 Sortable Lists 319

8.2.1 Ordered Insertion 320

8.2 Insertion Sort 320

8.2.2 Sorting by Insertion 321

8.2.3 Linked Version 323

8.2.4 Analysis 325

8.3 Selection Sort 329

8.3.1 The Algorithm 329

8.3.2 Contiguous Implementation 330

8.3.3 Analysis 331

8.3.4 Comparisons 332

8.4 Shell Sort 333

8.5 Lower Bounds 336

8.6.1 The Main Ideas 339

8.6 Divide-and-Conquer Sorting 339

8.6.2 An Example 340

8.7 Mergesort for Linked Lists 344

8.7.1 The Functions 345

8.7.2 Analysis of Mergesort 348

8.8 Quicksort for Contiguous Lists 352

8.8.1 The Main Function 352

8.8.2 Partitioning the List 353

8.8.3 Analysis of Quicksort 356

8.8.4 Average-Case Analysis of Quicksort 358

8.8.5 Comparison with Mergesort 360

8.9 Heaps and Heapsort 363

8.9.1 Two-Way Trees as Lists 363

8.9.2 Development of Heapsort 365

8.9.3 Analysis of Heapsort 368

8.9.4 Priority Queues 369

8.10 Review:Comparison of Methods 372

Pointers and Pitfalls 375

Review Questions 376

References for Further Study 377

9 Tables and Information Retrieval 379

9.1 Introduction:Breaking the Ig n Barrier 380

9.2 Rectangular Tables 381

9.3 Tables of Various Shapes 383

9.3.1 Triangular Tables 383

9.3.2 Jagged Tables 385

9.3.3 Inverted Tables 386

9.4 Tables:A New Abstract Data Type 388

9.5 Application:Radix Sort 391

9.5.1 The Idea 392

9.5.2 Implementation 393

9.5.3 Analysis 396

9.6 Hashing 397

9.6.1 Sparse Tables 397

9.6.2 Choosing a Hash Function 399

9.6.3 Collision Resolution with Open Addressing 401

9.6.4 Collision Resolution by Chaining 406

9.7 Analysis of Hashing 411

9.8 Conclusions:Comparison of Methods 417

9.9.1 Choice of Algorithm 418

9.9 Application:The Life Game Revisited 418

9.9.2 Specification of Data Structures 419

9.9.3 The Life Class 421

9.9.4 The Life Functions 421

Pointers and Pitfalls 426

Review Questions 427

References for Further Study 428

10 Binary Trees 429

10.1 Binary Trees 430

10.1.1 Definitions 430

10.1.2 Traversal of Binary Trees 432

10.1.3 Linked Implementation of Binary Trees 437

10.2 Binary Search Trees 444

10.2.1 Ordered Lists and Implementations 446

10.2.2 Tree Search 447

10.2.3 Insertion into a Binary Search Tree 451

10.2.4 Treesort 453

10.2.5 Removal from a Binary Search Tree 455

10.3 Building a Binary Search Tree 463

10.3.1 Getting Started 464

10.3.2 Declarations and the Main Function 465

10.3.3 Inserting a Node 466

10.3.4 Finishing the Task 467

10.3.5 Evaluation 469

10.3.6 Random Search Trees and Optimality 470

10.4.1 Definition 473

10.4 Height Balance:AVL Trees 473

10.4.2 Insertion of a Node 477

10.4.3 Removal of a Node 484

10.4.4 The Height of an AVL Tree 485

10.5 Splay Trees: A Self-Adjusting Data Structure 490

10.5.1 Introduction 490

10.5.2 Splaying Steps 491

10.5.3 Algorithm Development 495

10.5.4 Amortized Algorithm Analysis:Introduction 505

10.5.5 Amortized Analysis of Splaying 509

Pointers and Pitfalls 515

Review Questions 516

References for Further Study 518

11 Multiway Trees 520

11.1 Orchards,Trees,and Binary Trees 521

11.1.1 On the Classification of Species 521

11.1.2 Ordered Trees 522

11.1.3 Forests and Orchards 524

11.1.4 The Formal Correspondence 526

11.1.5 Rotations 527

11.1.6 Summary 527

11.2 Lexicographic Search Trees:Tries 530

11.2.1 Tries 530

11.2.2 Searching for a Key 530

11.2.3 C++ Algorithm 531

11.2.4 Searching a Trie 532

11.2.5 Insertion into a Trie 533

11.2.6 Deletion from a Trie 533

11.2.7 Assessment of Tries 534

11.3 External Searching :B-Trees 535

11.3.1 Access Time 535

11.3.2 Multiway Search Trees 535

11.3.3 Balanced Multiway Trees 536

11.3.4 Insertion into a B-Tree 537

11.3.5 C++ Algorithms:Searching and Insertion 539

11.3.6 Deletion from a B-Tree 547

11.4.1 Introduction 556

11.4 Red-Black Trees 556

11.4.2 Definition and Analysis 557

11.4.3 Red-Black Tree Specification 559

11.4.4 Insertion 560

11.4.5 Insertion Method Implementation 561

11.4.6 Removal of a Node 565

Pointers and Pitfalls 566

Review Questions 567

References for Further Study 568

12 Graphs 569

12.1 Mathematical Background 570

12.1.1 Definitions and Examples 570

12.1.3 Directed Graphs 571

12.1.2 Undirected Graphs 571

12.2.1 The Set Representation 572

12.2 Computer Representation 572

12.2.2 Adjacency Lists 574

12.2.3 Information Fields 575

12.3 Graph Traversal 575

12.3.1 Methods 575

12.3.2 Depth-First Algorithm 577

12.3.3 Breadth-First Algorithm 578

12.4 Topological Sorting 579

12.4.1 The Problem 579

12.4.2 Depth-First Algorithm 580

12.4.3 Breadth-First Algorithm 581

12.5.1 The Problem 583

12.5 A Greedy Algorithm:Shortest Paths 583

12.5.2 Method 584

12.5.3 Example 585

12.5.4 Implementation 586

12.6 Minimal Spanning Trees 587

12.6.1 The Problem 587

12.6.2 Method 589

12.6.3 Implementation 590

12.6.4 Verification of Prim s Algorithm 593

12.7 Graphs as Data Structures 594

Pointers and Pitfalls 596

References for Further Study 597

Review Questions 597

13 Case Study:The Polish Notation 598

13.1 The Problem 599

13.1.1 The Quadratic Formula 599

13.2 The Idea 601

13.2.1 Expression Trees 601

13.2.2 Polish Notation 603

13.3 Evaluation of Polish Expressions 604

13.3.1 Evaluation of an Expression in Prefix Form 605

13.3.2 C++ Conventions 606

13.3.3 C++ Function for Prefix Evaluation 607

13.3.4 Evaluation of Postfix Expressions 608

13.3.5 Proof of the Program:Counting Stack Entries 609

13.3.6 Recursive evaluation of Postfix Expressions 612

13.4 Translation from Infix Form to Polish Form 617

13.5 An Interactive Expression Evaluator 623

13.5.1 Overall Structure 623

13.5.2 Representation of the Data:Class Specifications 625

13.5.3 Tokens 629

13.5.4 The Lexicon 631

13.5.5 Expressions:Token Lists 634

13.5.6 Auxiliary Evaluation Functions 639

13.5.7 Graphing the Expression:The Class Plot 640

13.5.8 A Graphics-Enhanced Plot Class 643

References for Further Study 645

A.1 Sums of Powers of Integers 647

A Mathematical Methods 647

A.2 Logarithms 650

A.2.1 Definition of Logarithms 651

A.2.2 Simple Properties 651

A.2.3 Choice of Base 652

A.2.4 Natural Logarithms 652

A.2.5 Notation 653

A.2.6 Change of Base 654

A.2.7 Logarithmic Graphs 654

A.2.8 Harmonic Numbers 656

A.3.2 Combinations 657

A.3 Permutations,Combinations,Factorials 657

A.3.1 Permutations 657

A.3.3 Factorials 658

A.4 Fibonacci Numbers 659

A.5 Catalan Numbers 661

A.5.1 The Main Result 661

A.5.2 The Proof by One-to-One Correspondences 662

A.5.3 History 664

A.5.4 Numerical Results 665

References for Further Study 665

B Random Numbers 667

B.1 Introduction 667

B.2 Strategy 668

B.3 Program Development 669

References for Further Study 673

C Packages and Utility Functions 674

C.1 Packages and C++ Translation Units 674

C.2 Packages in the Text 676

C.3 The Utility Package 678

C.4 Timing Methods 679

D Programming Precepts,Pointers,and Pitfalls 681

D.1 Choice of Data Structures and Algorithms 681

D.1.1 Stacks 681

D.1.2 Lists 681

D.1.5 Tables 682

D.1.4 Sorting Methods 682

D.1.3 Searching Methods 682

D.1.6 Binary Trees 683

D.1.7 General Trees 684

D.1.8 Graphs 684

D.2 Recursion 685

D.3 Design of Data Structures 686

D.4 Algorithm Design and Analysis 687

D.5 Programming 688

D.6 Programming with Pointer Objects 689

D.7 Debugging and Testing 690

D.8 Maintenance 690

Index 693