Map 值重复去重

    public static void main(String[] args) {
        Map<String,Object> map = new HashMap<>();
        map.put("1","A");
        map.put("2","A");
        map.put("3","F");
        map.put("4","G");
        map.put("5","H");
        map.put("6","H");
        map.put("7","G");
        map.put("8","D");
        map.put("9","F");
        map.put("10","S");
        map.put("11","S");
        map.put("12","T");
        map.put("13","Y");
        map.put("14","O");
        Map<String,Object> map2 = new HashMap<>();
        List<String> list = new ArrayList<>();
        for(Map.Entry<String,Object> entrySet : map.entrySet()) {

            if(!list.contains(entrySet.getValue())) {
                list.add((String) entrySet.getValue());
                map2.put(entrySet.getKey(),entrySet.getValue());

            }
        }
        System.out.println(list);
        System.out.println(map2);


    }