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BJP4 Self-Check 12.13: mystery4

Language/Type: Java recursion recursive tracing
Author: Whitaker Brand (on 2016/09/08)

For each call to the following method, indicate what value is returned: 

public int mystery4(int x, int y) {
    if (x < y) {
        return x;
    } else {
        return mystery4(x - y, y);
    }
}
mystery4(6, 13)
mystery4(14, 10)
mystery4(37, 10)
mystery4(8, 2)
mystery4(50, 7)

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