TapeEquilibrium

class Solution {
    public int solution(int[] A) {

        long rsum = 0;

        for (int i = 1; i < A.length; i++)
            rsum += A[i];

        long lsum = A[0];
        int min = (int) Math.abs(lsum - rsum);
        for (int i = 1; i < A.length-1; i++) {
            lsum += A[i];
            rsum -= A[i];
            int diff = (int) Math.abs(lsum - rsum);
            if (diff < min)
                min = diff;
        }

        return min;
    }
}