cs.jdoner.me
Practice for the next APE
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day streak
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problems solved
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insights
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skills studied
Exam conditions
No notes. No unit tests. No autograder. You read a provided main and the text it prints, that is your only feedback.
The loop that passes
Restate the problem → draw the state → write the code → run main → compare the output. Drawing the picture is the skill.
This week
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Instant zeros
Five ways to score nothing, whatever else is right. Calm facts, worth knowing cold before Wednesday.
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Today’s focus
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Your focus areas
Ordered by where you are thinnest. This list re-sorts as you practice, try it yourself first, then read the walkthrough.