Sort Dictionary by Key

Question

I'm trying to create a Parameter request with Multiple Key Value Dictionary and it's creating perfectly. But every time dictionary is created with random Key - value order. How to Sort or order with respect to Dictionary Keys. Example :

    [
      "mbappdetails": [
"locationdtls": [
          "ipAdress": "100.105.100.6",
          "locationDtl": "NaviMumbai,Maharashtra",
          "longdtl": "73.0152077",
          "latdtl": "19.1112212"
        ],
        "appdtls": [
          "appregflg": "00",
          "appid": "com.mmcompany.nstapp",
          "applversion": "1.0.70",
          "pushnkey": "cVCzsSyxCLr4l5JPElHWLDiNuoQJcbFmRlN5LFWZM9hN5lYYZnJy_4Kvvu2_fAjBXhGxbKpt"
        ],
        "devicedtls": [
          "deviceserial": "ExtEYNBSO8D85KR7DCEIOSHH",
          "devicemodel": "iPod Touch 6",
          "os": "iOS",
          "simflag": "N",
          "devicesdkversion": "12.10",
          "deviceproduct": "iPod Touch 6",
          "deviceid": "XXXXX-A2F5-XXXX-8EAC-XXXXX",
          "devicemake": "iPod touch",
          "rootflg": "N",
          "devicebrand": "APPLE",
          "osVersion": "12.1.4"
        ],
        "channelid": "XXXXXXRRRRRR"
      ],
      "token": "myToken",
      "signcs": "encrypted_dictionary_key_values_with_signature_key"
    ]

Order Should be : channelid,appdtls,devicedtls,locationdtls,token,signcs

Output must be in Dictionary ONLY.

@RakeshaShastri Hi, I'm trying to sort Dictionary with respect to Key names. Like ["Name": "Rahul","Age":"26", "Location": "Mumbai","AppName": "nsdApp"] — user10959828, Apr 19 '19 at 12:41
The question is **why?** do you want it sorted. Not **how?** :'D. — Rakesha Shastri, Apr 19 '19 at 12:42
@RakeshaShastri I need to send Params in particular sorted way only else server will not accept. Its like little complicated encryption with server site. — user10959828, Apr 19 '19 at 12:44
Maybe make a simple array of keys ["Name","Age", "Location","AppName"], and access to you dictionary from element from this array — Marcin Nowak, Apr 19 '19 at 12:44
@Paulw11 Order matters for server site. Server accepting only in some particular orders dictionary only. If is there any other option please let me know. Thanks — user10959828, Apr 19 '19 at 12:45
First, that's a flaw on the server code. Second, you are misunderstanding the JSON Representation and a Swift Dictionary. It shouldn't matter in your own part, it's just when you transform your Dictionary, or your Struct, back to JSON. — Larme, Apr 19 '19 at 13:23
You cannot sort a dictionary. It is an unsorted type. Sorting a dictionary has no meaning. — Fogmeister, Apr 19 '19 at 16:33

score 3 · Answer 1 · answered Apr 19 '19 at 12:48

3

Unfortunately, the Dictionary data structure was not designed for any sorted storage. However, you can sort the keys and get it in the form of the array.

let dictionary = [
    "A" : [1],
    "Z" : [3],
    "C" : [2]
]

let keysSorted = Array(dictionary.keys).sorted(<)

Then you can iterate over the sorted array and look up dictionary values by keys. Hope it helps!

answered Apr 19 '19 at 12:48

Krakke93

95
5

As I said before dictionary data structure doesn't preserve the order in which the elements are inserted, nor doesn't support any particular order. However, if you need to send the values to a server in a specified order, I suggest writing your own logic to transfer unordered dictionary values into ordered JSON ones. – Krakke93 Apr 19 '19 at 14:10

Muhammad Danish Qureshi · Answer 2 · 2019-04-19T12:56:45.223

0

You did not add any code so you can try this: (You can change sign according to your requirement. in Which as-sending or descending order you want)

let sortedDict = YourDictionary.sorted(by: {$0.0 > $1.0})

and if you are trying to call an API then it does not matter in which order params are.

edited Apr 19 '19 at 12:56

answered Apr 19 '19 at 12:47

Muhammad Danish Qureshi

329
1
7
27

1

`let sortedDict = dict.sorted {$0.key > $1.key}` – Leo Dabus Apr 19 '19 at 13:10
What do you mean by output dictionary? Dictionary is an unordered collection – Leo Dabus Apr 19 '19 at 13:18
@LeoDabus One guy Answered my question and Its in Array. Yea I know and I need helps. – user10959828 Apr 19 '19 at 13:21
@user10959828 now your string it is not a valid json – Leo Dabus Apr 19 '19 at 13:29
@LeoDabus Not JSON bro, It's Dictionary :) – user10959828 Apr 19 '19 at 13:35
There is not a built in method to do it. I think we have to do it with a model. Model will make dictionary in sequence. – Muhammad Danish Qureshi Apr 19 '19 at 13:40

score 0 · Answer 3 · answered Apr 19 '19 at 13:41

0

You try the below code.

    var dict = ["name" : "Test", "user" : "Users" ]
    dict = [String : String](uniqueKeysWithValues: dict.sorted{ $0.key < $1.key 
    })

answered Apr 19 '19 at 13:41

Aman Pathak

219
2
6

I want If key = "user" ---- Its order should be 1st, If key = "name" -- 2nd like this order with condition. – user10959828 Apr 19 '19 at 13:52

Sort Dictionary by Key

3 Answers3