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Introduction to Computer Science I is a first course in computer science at Harvard College for concentrators and non-concentrators alike. More than just teach you how to program, this course teaches you how to think more methodically and how to solve problems more effectively. As such, its lessons are applicable well beyond the boundaries of computer science itself. That the course does teach you how to program, though, is perhaps its most empowering return. With this skill comes the ability to solve real-world problems in ways and at speeds beyond the abilities of most humans.

LECTURES

Lecture 1 - How Computers Work, Binary

Lecture 2 - Introduction to Programming and Scratch

Lecture 3 - Threads and Programs with Multiple Scripts

Lecture 4 - Binary Numbers, Programming Languages, Working in Linux, and Programming in C

Lecture 5 - Secure File Transfer, Variable Types, and Arithmetic Operators

Lecture 6 - Standard Input Functions, Boolean Expressions, and Loops

Lecture 7 - Cryptography, Bugs, Integer Casting, and Functions

Lecture 8 - Local and Global Variables, the Stack, Return Values, and Arrays

Lecture 9 - Strings as Arrays, Command-Line Arguments, and more Cryptography

Lecture 10 - Run Times and Algorithms, Recursion

Lecture 11 - Sorting: Bubble Sort, Selection Sort, and Merge Sort

Lecture 12 - Hardware, Processors, and Implications for Software

Lecture 13 - Greedy Algorithms, Software Design and Debugging

Lecture 14 - Pointers

Lecture 15 - Pointers and Arrays, Dynamic Memory Allocation

Lecture 16 - Pointer Arithmetic, Structures, File I/O

Lecture 17 - Linked Lists

Lecture 18 - Inserting and Deleting Elements in Linked Lists, Doubly-Linked Lists

Lecture 19 - Hash Tables, Dealing with Collisions

Lecture 20 - Pointers to Pointers, Binary Search Tree, Tries, Heaps

Lecture 21 - Heapsort, Jeopardy!

Lecture 22 - Huffman Coding Theory

Lecture 23 - Bitwise Operators, Underneath the Hood - From Code to Executable File

Lecture 24 - Dangerous Functions, Secure Code

Lecture 25 - The Internet and Webpages - HTTP and XHTML

Lecture 26 - Introduction to PHP

Lecture 27 - User Input, Setting up a Login Page, SQL

Lecture 28 - Threats, Part 1

Lecture 29 - Threats, Part 2

Lecture 30 - Introduction to LISP

Lecture 31 - Brief Introduction to System Programming and Machine Organization

Lecture 32 - Conclusions

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