Important Notice:

Practice-It will be discontinued as of November 1st, 2024. After this date, the website will remain online for a transitional period, but login will be restricted to University of Washington NetID authentication. This marks the next phase towards the platform's full retirement. Thank you for your use and support of the application over the years.

If you are looking for an alternative, a similar tool, CodeStepByStep, was developed independently by the original author of Practice-It, and is available at codestepbystep.com**

logo Practice-It logo

Main Page → Problems → Solve a Problem

range

Language/Type: Java ArrayList Collections
Author: Marty Stepp

Write a method range that accepts an ArrayList of integers as a parameter and that returns the range of values contained in the list, which is defined as 1 more than the difference between the largest and smallest elements. For example if a variable called list stores the following values: 

[18, 14, 29, 12, 7, 25]

The call of range(list) should return 23, because this is one more than the largest difference between any pair of values (29 - 7 + 1 = 23). An empty list is defined to have a range of 0.

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.