Stanford School of Engineering

Stanford Home | Engineering Home

Stanford Engineering Everywhere

### Course Contents:

Course Home
Lectures
Syllabus
Handouts
Assignments
Exams

# Introduction to Computer Science | Programming Abstractions

Instructor: Zelenski, Julie
(return to course)

#### Course Meetings: 27

Lecture 1 View Now >
43 min
Topics: About the CS106 Series at Stanford, The CS106 Philosophy, Why take CS106B?, Logistics of the Course, Introducing C++
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 2 View Now >
44 min
Topics: Similarity between C++ & Java: - syntax - variable types - operators - control structures, Looking at an Example C++ code: - comment, #include Statements, Global Declarations (constant), Declaring a Function Prototype, The main() Function, Decomposed Function Definition, Example Live Coding: To Calculate the Average, for loop -> a while : Another Purpose of the Same Code, C++ User Defined Data Types: -enums – records, C++ Parameters Passing: -pass by value - pass by reference
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 3 View Now >
45 min
Topics: C++ Libraries - Standard Libraries, CS106 Libraries, CS106 random.h Library, C++ String Type, Operations on String Type, String Class' Member Functions, C++ string vs Java String, Live Example Code : Working on Strings, CS106 strutils.h Library, C++ String vs C String, Concatenation Pitfall (C++ vs C string cont.), C++ Console I/O
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 4 View Now >
50 min
Topics: C++ Console I/O, C++ File I/O, Stream Operations, Live Example Coding : Working with Files, Live Coding Continuation: Function to Operate on the Opened File Stream, Passing the File Stream by Reference, Error Function, Class Libraries OO Features, Why OO is So Successful, CS106 Class Library, CS106: Scanner Library, Scanner Client Interface, Client Use of Scanner, Container Classes, Template Containers, Vector Interface
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 5 View Now >
46 min
Topics: Client Use of Templates, Vector Class, Vector Client Interface, Client Use of Vector, Type-safety in Templates, Grid Class, Grid Client Interface, Client Use of Grid, Stack Class, Stack Client Interface, Queue Class, Queue Client Interface, Client Use of Queue, Nested Templates, Learning a New API, CS106B Library Documentation
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 6 View Now >
43 min
Topics: More Containers, Map Class, Uses of Map, Map Client Interface, Live Coding Example: Use of Map, More information on Maps, What’s Missing? Iterator Operation Through the Map, Iterating Over the Map, Set Class, Set Client Interface, Live Coding Example : Use of Set, Set Higher-level Operations, Why Set is Different
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 7 View Now >
48 min
Topics: Seeing Functions as Data: Specific Plot Functions, Generic Plot Function, Back to the Set, Live Coding Example: Use of Set with User Defined Data Types, Client Callback Function, Review of the Classes Seen,5 Using Nested ADTs (Abstract Data Types), Live Coding Example, Recursion, Recursive Decomposition
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 8 View Now >
43 min
Topics: Common Mistakes Stumbled Upon: 'I'terator, Common Mistakes Stumbled Upon: Concatenating Strings, Solving Problems Recursively, Functional Recursion, Example of Recursion: Calculating Raise to Power, Demo of "Raise to the Power Example" Through Live Coding, Mechanics of What’s Going to Happen in Recursion, More Efficient Recursion, Being Wary of Too Many Base Cases, Recursion & Efficiency, Example: Palindromes, Example: Binary Search, Binary Search Code Walk Through, Choosing a Subset; Choose Code
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 9 View Now >
48 min
Topics: Thinking Recursively, Procedural vs Functional – Recursion, Fractal Code, Live Demo: Fractal Example, Another Recursive Graphic: Mondrian Art, Random Pseudo-Mondrian and the Code, Hanois Towers : Classic Recursion Example, Tower Code, Live Demo, Permutations, Permute Code, Tree of Recursive Calls
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 10 View Now >
47 min
Topics: Refresh: Permute Code, Tree of Recursive Calls, Live Demo: Testing with Different Cases, Eliminating Duplicates, Subsets, Subset Strategy, Subset Code, Tree of RecursiveCalls: Subset, Exhaustive Recursion, Recursive Backtracking, Turning Recursive Permute to Backtracking, Permute -> Anagram Finder Code, Decision Problems: 8 Queens, Extension to N Queens
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 11 View Now >
48 min
Topics: Backtracking Pseudocode, Sudoku Solver, Sudoku Code, Cryptarithmetic, Dumb Solver, Smarter Solver, Looking for Patterns, Introduction to Pointers, Single Pointer Operations
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 12 View Now >
42 min
Topics: Pointer Movie, Pointer Operations: Code & Pointer Memory Diagrams, Pointer Basics, Pointer and Dynamic Arrays, Use of Pointers, Recursive Data, A Recursive Structure, Live Demo: Working with Linked List, Building the List
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 13 View Now >
52 min
Topics: Coding with Linked List, Printing the List, Using Recursion to Print List, De-allocating the Memory Used for the Linked List, Watch the Pointers: Prepend Function, Passing Pointers by Reference, Array vs Linked List, Insert in Sorted (order) Linked List, Insert in Sorted Order: Code, Recursive Insert
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 14 View Now >
50 min
Topics: Algorithm Analysis, Evaluating the Performance, Analysis of Codes: Statement Counts, Another Example (Statement Count Contd.), Comparing Algorithm, Big-O Notation, Big-O to Predict the Time of Execution, Best/Worst/Average Case, Analysis of Recursive Algorithms, Another Example : Towers of Hanoi, A Tabulation for Different Algorithms, Growth Patterns, Application of Algorithm Analysis to Sorting, Selection Sort, Selection Sort Code
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 15 View Now >
47 min
Topics: Selection Sort, Live Demo: Working/execution of the Code, Selection Sort Analysis, Insertion Sort Algorithm, Live Demo: Working/execution of Insertion Sort, Insertion Sort Analysis, Insertion vs Selection, Quadratic Growth of the Algorithm, Merge Sort, Merge Sort: Working/execution Demo, Merge Sort Code Explanation, Merge Sort Analysis, Quadratic vs Linear Arithmetic, Sort 'Race', Quick Sort Idea
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 16 View Now >
48 min
Topics: Partitioning for Quicksort, Quicksort Code Working/execution, Quicksort Code, Live Demo: Running Quicksort vs Merge Sort, Bad Split Example, Worst Case Split, What Input has Worst Case for Quick Sort, Live Demo: Running Quicksort vs Merge Sort, Different Input Scenarios, Strategy to Avoid Worst Case Split, Execution Time Tabulation, Towards Generic Functions: Swap, Function Template, Example Live Code, Template Instantiation and its Errors, Sort Template, Client Use of Sort Template
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 17 View Now >
45 min
Topics: Sort Template with Callback, Supplying the Callback Function, One Last Convenience: Default Callback Function, Why Object Oriented Programming, Class Division, Class Interface in ".h" File, Storage for Objects, Accessing Members of a Class, Class Implementation, Implementing Member Functions, Maintaining Object Consistency, Constructors of a Class, Destructors of a Class, Basic Thoughts on Object Design, Internal vs External Representation: Idea of Encapsulation, Better Representation, ADTs (Abstract Data Types)
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 18 View Now >
51 min
Topics: Abstract Data Types, Wall of Abstraction, Why ADTs?, Live Coding Example: Creating the Vector Class, Private Data Members, Growing Dynamically: Making Space at Runtime, Insert and Remove Functions, Templatizing the Class Created, Including the "template.cpp" - Why?
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 19 View Now >
41 min
Topics: Rules of Template Implementation, Explanation of the Working, Not Allow Member Wise Copy, InsertAt Function, Consequences of Contiguous Memory Being a Disadvantage, Stack Class, The Member Function Definitions, Midterm Post Mortem
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 20 View Now >
51 min
Topics: Live Coding: Recap of the Vector-based Implementation for Stack, Linked List Implementation for Stack, Live Coding: Linked List Implementation for Stack, Analyzing Push/pop Functions, Queue Implementation, Live Coding: Queue Implementation, Alternative Implementation, Text Editor Case Study, Buffered Class Interface and Buffer Layered on Vector, Live Coding: Text Editor, Evaluate Vector Buffer, Buffer Layered on Stack, Live Demo, Compare Implementations, Buffer as Linked List
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 21 View Now >
46 min
Topics: Buffer: Vector vs Stack, Buffer as Linked List, Cursor Design, Use of Dummy Cell, Linked List Insert/delete, Linked List Cursor Movement, Compare Implementation, Doubly Linked List, Compare Implementation, Space Time Trade Off, Implementing Map, Simple Map Implementation: Vector, Map as Vector : Performance Implication, A Different Strategy
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 22 View Now >
50 min
Topics: Map as Vector, A different Strategy: Binary Search Tree, Trees in General, Binary Search Tree for Numbers, Operating on Trees, Tree Traversals at Work, Implementing Map as Tree, Map - getValue(), Important Syntactical Advice, Adding to a BST, Trace treeEnter(), Passing Nodes by Reference, Evaluate Map as a Tree, Impact of the Height of the Tree, Degenerate Trees, What to do About Unbalanced Trees?
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 23 View Now >
46 min*
Topics: Pathfinder Demo, Graphs: Examples, Graphs: Explanation, Implementation Strategies, Graph Representation in C++, Nodes and Arcs in C++, Graph Traversals, DFS - (Depth First Search), Trace DfS, BFS - (Breadth First Search), Trace BFS, Graph Search Algorithms, Weighted arcs
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 24 View Now >
50 min
Topics: Compare Map Implementations, Hashtable Idea, Hash Functions, Hash Collisions, Live Demo: Hashing, Live Coding: Hashing, Hashing Idea : Example in Real World, Hash Table Performance, Compare Map Implementations, Hashing Generic Types, Implementing Set
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 25 View Now >
51 min
Topics: Lexicon Case Study, Lexicon as Sorted Vector, Lexicon as BST, Lexicon as Hash Table, Summary so Far, Noticing Patterns/repetitions in the Words, Letter Trie, Lexicon as Trie, Dynamic Array of Children, Flatten Tree into Array, Exploiting Prefixes and Suffixes, DAWG: Directed Acyclic Word Graph, Lexicon as DAWG, The Final Result, Cool Facts about the DAWG
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 26 View Now >
49 min
Topics: Final Showdown, Thinking About Design, Runtime Performance, Memory Used, Code Complexity, Making Tradeoffs, Array vs Vector, Stack/Queue vs Vector, Set vs Sorted Vector, Pointer-based vs. Contiguous Memory, CS106B MVPs, Pointers, To Remember Years from Now, After CS106B, considering.cs
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune
Lecture 27 View Now >
52 min
Topics: About the C++ Language, Quick History of C++, C++ Philosophy, C++ Without genlib.h, A Working genlib.h Replacement, Other CS106 Headers, strutils.h, simpio.h, random.h, graphics.h/extrgraph.h, What about ADTs?, Standard Template Library, STL Algorithms, Language Features, Operator Overloading, What Next?
Transcript: HTML | PDF
YouTube | iTunes | Vyew | BitTorrent | Zune

*Segments of this lecture have been edited out due to copyright restrictions.

This work is licensed under a Creative Commons Attribution 3.0 United States License.