Why Does Greedy Sorting Always Work? The Exchange Argument with Time on Task
Use CCC 2013 Time on Task to understand shortest-first greedy selection and prove it with an exchange argument.
Python Learning Notes
Python Learning Notes
Python Learning Notes
How Do You Build and Traverse a 2D List?
Learn how to build, index, read, and traverse Python 2D lists while avoiding shared-row aliasing mistakes.
Python DSA Notes, Python Learning Notes
What Is a Dry Run? Trace Your Code Before Running It
Trace code with small inputs and variable tables to catch boundary, initialization, and update-order mistakes.
Python Learning Notes
The Infinite Loop Beginners Write Most Often
Learn why while loops run forever and how to make their stopping conditions reachable.
Python Learning Notes
How Do You Choose Between for and while in Python?
Choose the Python loop that best matches known items, fixed counts, or changing stop conditions.
Python Learning Notes
What Is the Difference Between append() and + in Python Lists?
A beginner-friendly Python note on append(), +, extend(), nested lists, and combining list values.
Python Learning Notes
Understand Python String Slicing in One Minute
A beginner-friendly Python note on word[1:4], include start, exclude stop, and slicing boundaries.
Python Learning Notes
What Is the Difference Between = and == in Python?
A beginner-friendly Python note on assignment, equality comparison, and writing correct if conditions.
Python Learning Notes
Variables Are Not Boxes; They Are More Like Labels
A beginner-friendly Python note on understanding variables as names that point to objects.
Python Learning Notes
print() Is More Than Hello World
A beginner-friendly Python note on using sep and end to control output formatting.