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

BJP3 Exercise 6.1: boyGirl

Language/Type: Java file processing Scanner
Author: Jason Ganzhorn (on 2013/04/01)

Write a method named boyGirl that accepts a Scanner as a parameter. The Scanner is reading its input from a file containing a series of names followed by integers. The names alternate between boys' names and girls' names. Your method should compute the absolute difference between the sum of the boys' integers and the sum of the girls' integers. The input could end with either a boy or girl; you may not assume that it contains an even number of names. If the input file tas.txt contains the following text: 

Steve 3 Sylvia 7 Craig 14 Lisa 13 Brian 4 Charlotte 9 Jordan 6

then your method could be called in the following way: 

Scanner input = new Scanner(new File("tas.txt"));
boyGirl(input);

and should produce the following output, since the boys' sum is 27 and the girls' sum is 29: 

4 boys, 3 girls
Difference between boys' and girls' sums: 2
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.