java - How to better calculate the average of two Array data in the same format

Question

There are two JSONArrays with the same format. One is the new data saveArray: [{"name":"name1","value":10},{"name":"name2","value":12}, ...,{}] An avgArray for the average data: [{"name":&quot

过去多啦不再A梦 · Answer

No more.

Algorithmically speaking, this is the most simplified. O(n)

为情所困 · Answer

    public static void getNewArrayAvg(JSONArray add,JSONArray avg,int num){
        JSONArray res = new JSONArray();
        int size = add.size();
        int range = avg.size();
        for (int i = 0; i < size; i++) {
            String key = add.getJSONObject(i).getString("name");
            double avgNum = add.getJSONObject(i).getDoubleValue("value")/(num+1.0);
            for (int j = 0; j < range; j++) {
                if (key.equals(avg.getJSONObject(j).getString("name"))) {
                    avgNum += avg.getJSONObject(j).getDoubleValue("value") * (num/(num+1.0));
                    JSONObject tmp = new JSONObject();
                    tmp.put("name", key);
                    tmp.put("value", avgNum);
                    res.add(tmp);
                    break;
                }
            }
        }
        res.toString();
    }

There should be a master who can use lambda to perform the arrogant operation, but as far as your requirements are concerned, you can only recalculate the value. In addition, you need to review the questions more.
The following operation is not allowed. Make sure that the value of name can match.

   avgObj = avgArray.get(i).get("value");
   addValue = saveArray.get(i).get("value");