logo CodeStepByStep logo


Language/Type: C++ recursion
Author: Marty Stepp (on 2016/06/16)

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

int mystery(int n) {
    if (n < 10) {
        return (10 * n) + n;
    } else {
        int a = mystery(n / 10);
        int b = mystery(n % 10);
        return (100 * a) + b;
(order shuffled)

You must log in before you can solve this problem.

Log In

Need help?

If you do not understand how to solve a problem or why your solution doesn't work, please contact your TA or instructor.
If something seems wrong with the site (errors, slow performance, incorrect problems/tests, etc.), please

Is there a problem? Contact a site administrator.

© Marty Stepp, all rights reserved.