gistfile1.txt

    private static int index(int val) {
        int res = 0;
        while (val > 1) {
            val >>= 1;
            res++;
        }
        return res;
    }
            
        System.out.println(8192 + " "+ index(8192 >> 13));
        System.out.println(16384 + " "+ index(16384 >> 13));
        System.out.println(32768 + " "+ index(32768 >> 13));
   

8192 0
16384 1
32768 2