public int size() {
        return size;
    }
@Test
    public void add7(){

        TreeMap<Long,String> treeMap = new TreeMap<Long, String>() ;
        long star = System.currentTimeMillis() ;
        for (int i = 0; i < count; i++) {
            double d = Math.random();
            int ran = (int)(d*100);
            treeMap.put(Long.valueOf(i + ran) ,"127.0.0." + i);
        }
        long end = System.currentTimeMillis() ;
        System.out.println("耗时 " + (end -star));
        System.out.println(treeMap.size());
    }