CS50x 2025 - Lecture 0 - Scratch

Computer Science. Computational Thinking. Problem Solving: Inputs, Outputs. Representation: Unary, Binary, Decimal, ASCII, Unicode, RGB. Abstraction. Algorithms. Running Times. Pseudocode. Scratch: Functions, Arguments, Return Values; Variables; Boolean Expressions, Conditionals; Loops; Events;...

Intermediate - 119 min - Software & IT - CS50

The full course: Learn Computer Science free

What you'll need

Books

  1. Code by Charles Petzold - View on Amazon
  2. Grokking Algorithms by Aditya Y. Bhargava - View on Amazon
  3. Cracking the Coding Interview by Gayle Laakmann McDowell - View on Amazon
  4. The Self-Taught Programmer by Cory Althoff - View on Amazon
  5. Algorithms to Live By by Brian Christian - View on Amazon
  6. Computer science by J. Glenn Brookshear - View on Amazon

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