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

evens

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

Write a method evens that takes an integer parameter n and that returns the integer formed by removing the odd digits from n. For example: 

    evens(8342116) returns 8426
    evens(4109) returns 40
    evens(8) returns 8

If a negative number with even digits other than zero is passed to the method, the result should also be negative, as in: 

    evens(-34512) returns -42
    evens(-163505) returns -60

Any leading zeros in the result should be ignored and if there are no even digits other than zero in the number, the method should return zero, as in: 

    evens(3052) returns 2
    evens(7010496) returns 46
    evens(35179) returns 0
    evens(5307) returns 0
    evens(7) returns 0

Write your solution to evens below.

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.