How to efficiently merge two JSON Strings based on a common key

I have two JSON strings which are essentially arrays of JSONObject. The two JSON strings have below structure and keys:

JSON-1:

[
    {
        "title": "ABC",
        "edition": 7,
        "year": 2011
    },
    {
        "title": "DEF",
        "edition": 2,
        "year": 2012
    },
    {
        "title": "XYZ",
        "edition": 3,
        "year": 2013
    }
]

And, JSON-2:

[
    {
        "title": "ABC",
        "price": "20"
    },
    {
        "title": "DEF",
        "price": "20"
    },
    {
        "title": "XYZ",
        "price": "20"
    }
]

Both these JSONs have a common key "title" based on which I want to merge these two JSONs, either merging JSON-2 values into JSON-1 or creating a JSON object with the merged result.

The merged result should look like below:

[
    {
        "title": "ABC",
        "edition": 7,
        "year": 2011,
        "price": "20"
    },
    {
        "title": "DEF",
        "edition": 2,
        "year": 2012
        "price": "20"
    },
    {
        "title": "XYZ",
        "edition": 3,
        "year": 2013
        "price": "20"
    }
]

How can I achieve this by minimum looping and minimum object creation? I also can not use entity/model classes. The idea is to do it without creating any model classes.

Note: I cannot use Gson because I don't have the approval to use the same.

1. I tried to use List<JSONObject> listObj = objectMapper.readValue(jsonOneString, new TypeReference<List<JSONObject>>(){});, but I am getting an unknown property exception.

2. I tried JsonNode node = objectMapper.readTree(jsonOneString);, but I cannot proceed much further with this approach.

I know what I am doing here is highly inefficient, so looking for ways which will use no entity class, minimum new object creation and minimum loops. Kindly advise.

UPDATE: I updated the below code with a slight modification:

if (json1elem.get("title")!=null 
        && json2elem.get("title")!=null 
            && json1elem.get("title").equals(json2elem.get("title"))) {

    //
}

JsonNode json1 = objectMapper.readTree(jsonOneString);
JsonNode json2 = objectMapper.readTree(jsonTwoString);
for (JsonNode json1elem : json1) {
    for (JsonNode json2elem : json2) {
        if (json1elem.get("title").equals(json2elem.get("title"))) {
            ((ObjectNode) json1elem).setAll((ObjectNode) json2elem);
            break;
        }
    }
}
System.out.println(json1.toPrettyString());