This is Fall 2025 of CS50 at Harvard College. Looking for Spring 2026?

This is CS50

Harvard College
Fall 2025

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Week 0 Scratch
Week 1 C
Week 2 Arrays
Week 3 Algorithms
Week 4 Memory
Week 5 Data Structures
Week 6 Python
Week 7 SQL
Artificial Intelligence
Week 8 HTML, CSS, JavaScript
Week 9 Flask
Week 10 The End

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Week 10 The End

Fun. Games.

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