Codility binary gap solution

BinaryGap.java

private static int gap(int N) {

    int max = 0;
    int counter = -1;

    while (N != 0) {

        if ((N & 1) == 1) {
          
            if (counter > max) {
                max = counter;
            }
            counter = 0;

        } else if (counter >= 0) {
            counter++;
        }

        N >>>= 1;
    }

    return max;
}