public static void main(String[] args) {

        int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
        int b[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
        for (int apple : a) {
            int z = 0, f = b.length - 1;

            while (z < f) {

                int u = (z + f) / 2;
                if (b[u] < apple) {
                    z = u + 1;
                } else {
                    f = u;
                }
            }

            if (z != f || b[z] != apple) {
                System.out.println("b not in a");
            }
        }
        System.out.println("b cont all from a");
    }