logo Practice-It logo


Language/Type: Java
Author: Marty Stepp (on 2020/04/15)

Write a static method called spinWheel that takes a Random object and an integer n as parameters and that simulates the spinning of a wheel until the number 20 comes up n times in a row. On the wheel are the numbers 20, 30, 40, 50, and 60 and each number should be equally likely to come up when the wheel is spun. Your method should report the individual spins as well as indicating how many times it takes to get n occurrences of 20 in a row. For example, below are two sample calls:

          Random r = new Random();
          spinWheel(r, 2);
          spinWheel(r, 3);

The first call should produce two lines of output like this:

        spins: 40, 40, 50, 20, 50, 50, 40, 20, 30, 40, 50, 20, 20
        2 in a row after 13 spins

The second call should produce two lines of output like this:

        spins: 50, 50, 50, 20, 40, 20, 40, 20, 20, 20
        3 in a row after 10 spins

Notice that the spin values are separated by commas and that the method stops when it has seen n occurrences of the value 20 in a row. You are to exactly reproduce the format of these logs. You may assume that the value n passed to your method is greater than or equal to 1.

Type your solution here:

This is a method problem. Write a Java method as described. Do not write a complete program or class; just the method(s) above.

You must log in before you can solve this problem.

Log In

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.