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

swap

Language/Type: Java arrays reference semantics
Author: Marty Stepp (on 2010/12/28)

Write a method named swap that accepts an arrays of integers and two indexes as its parameters and swaps the elements at those indexes. You may assume that the array passed is not null and that the indexes are within the bounds of the array.

For example, if the following parameters are passed:

int[] a = {11, 42, -5, 27, 0, 89};
swap(a, 1, 3);

After the call, the array a should store the elements {11, 27, -5, 42, 0, 89}.

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.