排序 草稿

//        List<Map.Entry<String,Long>> lstEntry = new ArrayList<>(collect.entrySet());
//        Collections.sort(lstEntry,((o1, o2) -> {
//            return o1.getValue().compareTo(o2.getValue());
//        }));

//这里将map.entrySet()转换成list，再用collections工具类中的sort()方法完成排序操作
        List<Map.Entry<String, Long>> list = new ArrayList<>(collect.entrySet());
        Collections.sort(list, new Comparator<Map.Entry<String, Long>>(){
            @Override
            public int compare(Map.Entry<String, Long> o1, Map.Entry<String, Long> o2) {
                int t =  - o1.getValue().compareTo(o2.getValue());
                if(t == 0)
                    return o1.getKey().compareTo(o2.getKey());
                return t;
            }

//            @Override
//            public int compare(Map.Entry<String, Long> o1, Map.Entry<String, Long> o2) {
//                return - o1.getValue().compareTo(o2.getValue());
//            }
        });

？？ 

Stream<Map.Entry<String, Long>> limit = list.stream().limit(10);