import java.io.*; 
import java.util.*; 

/*
Write a method called boyGirl that accepts a Scanner that 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. For example, if the input file contains the following 
text:
   Erik 3 Rita 7 Tanner 14 Jillyn 13 Curtis 4 Stefanie 12 Ben 6
Then the method should produce the following console output, 
since the boys’ sum is 27 and the girls’ sum is 32:
   4 boys, 3 girls
   Difference between boys' and girls' sums: 5
*/ 


public class BoysGirls {
	public static void main(String[] args) {
		boyGirl();
	}

	public static void boyGirl() {
		try { 
			Scanner input = new Scanner(new File("boygirl.txt")); 
		int boySum = 0; 
		int girlSum = 0; 
		int count = 0; 
		int diff = 0; 
		while (input.hasNext()) {
			int x = input.nextInt(); 
			if (count % 2 == 0) {
				boySum += x; 
			} else {
				girlSum += x; 
			}
			count++;
		} 
		diff = Math.abs(boySum - girlSum); 
		System.out.println("Difference between boys' and girls' sums: " + diff); 
		} catch (FileNotFoundException e) {
			System.out.println("error");
		}
	}
}