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You are working on problem set: Unit 4 ( Pause)

recursionMystery648

Language/Type: Java recursion

Given the method below, what is the output of the following call? (What is the method really doing?)

public static int mystery(int n) {
    if (n < 10) {
        return n;
    } else {
        int a = n / 10;
        int b = n % 10;
        return mystery(a + b);
    }
}
mystery(648);
(order shuffled)

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