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Grade my AP CS A free-response code

Pick a question, write your Java method, and Silver grades it the way an AP reader would — by rubric, with partial credit and feedback on exactly what's missing.

Question

Write countVowels(String word): return the number of vowels (a, e, i, o, u, case-insensitive) in word. Return 0 for null or empty input.

Your code

public int countVowels(String word) {

}

Grading reads your logic — it does not run your code, so you don't need a full class or a main method. Just the requested method.

New to the free-response section? Read how the AP CS A FRQ is scored.