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edX - CS50

Pset 1 - C

Problem Set 1

Lecture
Description

Shorts

• Command Line
• Data Types
• Operators
• Conditional Statements
• Loops

Hello

Walkthrough

Mario - Less Comfortable

Walkthrough

Mario - More Comfortable

Walkthrough

Pset 2 - Crypto

Problem Set 2

Lecture
Description

Shorts

• Debugging
• Functions
• Variables and Scope
• Arrays
• Command Line Arguments
• Magic Numbers

Caesar - Less Comfortable

Walkthrough
ASCII Chart
isalpha
isupper
islower

Vigenère - Less Comfortable

Walkthrough

Crack - More Comfortable

Walkthrough

Pset 3 - Music

Problem Set 3

Lecture
Description
Music
Walkthrough

Shorts

• Computational Complexity
• Selection Sort
• Bubble Sort
• Insertion Sort
• Linear Search
• Binary Search
• Algorithms Summary
• Recursion
• Merge Sort
• GDB

A440 (Pitch Standard)
The Magical Mathematics of Music
CS50.h Library
Piano Key Frequencies

Pset 4 - Forensics

Problem Set 4

Lecture
Description

Shorts

• Call Stacks
• File Pointers
• Pointers
• Dynamic Memory Allocation
• Hexadecimal

Whodunit

Walkthrough
GIF File Format
BMP File Format
JPEG File Format
PNG File Format
Web Colors
Mastering Markdown

Resize - Less Comfortable

Walkthrough

Resize - More Comfortable

Walkthrough

Recover

Walkthrough

Pset 5 - Mispellings

Problem Set 5

Lecture
Description
Speller
Walkthrough

Shorts

• Structures
• Defining Custom Types
• Singly Linked Lists
• Hash Tables
• Tries
• Stacks
• Queues
• Data Structures