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

countLastDigits

Language/Type: Java arrays tallying
Author: Marty Stepp

Write a static method named countLastDigits that accepts an array of integers as a parameter and examines its elements to determine how many end in 0, how many end in 1, how many end in 2 and so on. Your method will return an array of counters. The count of how many elements end in 0 should be stored in its element at index 0, how many of the values end in 1 should be stored in its element at index 1, and so on.

For example, if an array named list contains the values {9, 29, 44, 103, 2, 52, 12, 12, 76, 35, 20}, the call of countLastDigits(list) should return the array {1, 0, 4, 1, 1, 1, 1, 0, 0, 2} because 1 element ends with 0 (20), no elements end with 1, 4 elements end with 2 (2, 52, 12, and 12), etc.

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.