Tape Equilibrium

gistfile1.java

import java.util.ArrayList;
import java.util.List;


public class TapeEquilibrium {

    public static void main(String[] args) {
        int [] numbers1 = {1,3,2,7};
        int [] numbers2 = {5,2,8,4};  
        evaluate(numbers1, 1);
        evaluate(numbers2, 5);
    }
	
    public static void evaluate(int [] numbers, int expected) {
        int answer = solution(numbers);
        System.out.println("Expected answer = " + expected + ", got " + answer);		
    }

    public static int solution(int[] A) {
	List<Integer> numbers = toList(A);
	int size = numbers.size();
	int sumLeft = numbers.get(0);
	int sumRight = sum(numbers.subList(1, size)); 
        int minDifference = Math.abs(sumLeft - sumRight);
        for (int i : numbers.subList(1, size -1)) {  
            sumLeft = sumLeft + i;
            sumRight = sumRight - i;
            int difference = Math.abs(sumLeft - sumRight);
            if (difference < minDifference) {
                minDifference = difference;
            }
        }
	return minDifference;
    }
	
    public static  List<Integer> toList(int [] array) {
	List<Integer> result = new ArrayList<Integer>();
	for (int ele : array) {
            result.add(new Integer(ele));
	}
	return result;
    }
	
    public static int sum(List<Integer> numbers) {
	int sumRight = 0;
	for (int i : numbers) {
		sumRight += i;
	}		
	return sumRight;
    }

}