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Recursive Tracing

Language/Type: Java recursion recursive tracing
Author: Stuart Reges (on 2014/02/13)

Consider the following method:

    public static int mystery(int x, int y) {
        if (x > y) {
            return 0;
        } else {
            return mystery(x + 1, y) + 2 * x - 1;

For each call below, indicate what value is returned:

mystery(1, 3)
mystery(4, 4)
mystery(3, 5)
mystery(1, 5)
mystery(4, 7)

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