How to Sort an array in an ascending order swift 2.3

Question

[{
msg = "Hi This is Jecky";
name = Susheel;
sender = 77;
timestamp = 1464241769520;
username = susheel;
}, {
msg = Dubai;
name = Jecky;
sender = 78;
timestamp = 1464246547147;
username = Jecky;
}, {
msg = "How are you ?";
name = Susheel;
sender = 77;
timestamp = 1464243480381;
username = susheel;
}, {
msg = "Aje dekhai nai";
name = Jecky;
sender = 78;
timestamp = 1464244974198;
username = Jecky;
}]

I have an array like this. I want to sort this array using timestamp in swift 2.3 or latest version of swift. Can anyone help me for this ?

Check this answer : http://stackoverflow.com/a/24685377/3202193 — Ashish Kakkad, May 27 '16 at 05:37
This is an Array not NSArray so Sortdescriptor won't work here. — Jecky, May 27 '16 at 05:39

fnc12 · Accepted Answer · 2016-05-27T06:53:21.357

let array=[
        [
            "msg":"Hi This is Jecky",
            "name":"Susheel",
            "sender":77,
            "timestamp":1464241769520,
            "username":"susheel",
        ],
        [
            "msg":"Dubai",
            "name":"Jecky",
            "sender":78,
            "timestamp":1464246547147,
            "username":"Jecky",
        ],
        [
            "msg":"How are you ?",
            "name":"Susheel",
            "sender":77,
            "timestamp":1464243480381,
            "username":"susheel",
        ],
        [
            "msg":"Aje dekhai nai",
            "name":"Jecky",
            "sender":78,
            "timestamp":1464244974198,
            "username":"Jecky",
        ],
    ]
    print("array = \(array)")
    let sortedArray=array.sort { (obj1, obj2) -> Bool in
        return (obj1["timestamp"] as! Double) < (obj2["timestamp"] as! Double)
    }
    print("sortedArray = \(sortedArray)")

score 7 · Answer 2 · answered May 27 '16 at 05:43

If your array is mutable you can user sortInPlace

yourArray.sortInPlace{$0.timestamp < $1.timestamp}

and if not, you can create a new array from sort, like suggested by Kristijan (although no need for parentheses on trailing closures):

let newArray = yourArray.sort{$0.timestamp < $1.timestamp}

score 2 · Answer 3 · answered Aug 21 '17 at 06:58

You can get this functionality using extension:

extension NSArray{
 //sorting- ascending
  func ascendingArrayWithKeyValue(key:String) -> NSArray{
    let ns = NSSortDescriptor.init(key: key, ascending: true)
    let aa = NSArray(object: ns)
    let arrResult = self.sortedArray(using: aa as! [NSSortDescriptor])
    return arrResult as NSArray
  }

  //sorting - descending
  func discendingArrayWithKeyValue(key:String) -> NSArray{
    let ns = NSSortDescriptor.init(key: key, ascending: false)
    let aa = NSArray(object: ns)
    let arrResult = self.sortedArray(using: aa as! [NSSortDescriptor])
    return arrResult as NSArray
  }
}

use like this:

 let array=[
      [
        "msg":"Hi This is Jecky",
        "name":"Susheel",
        "sender":77,
        "timestamp":1464241769520,
        "username":"susheel",
        ],
      [
        "msg":"Dubai",
        "name":"Jecky",
        "sender":78,
        "timestamp":1464246547147,
        "username":"Jecky",
        ],
      [
        "msg":"How are you ?",
        "name":"Susheel",
        "sender":77,
        "timestamp":1464243480381,
        "username":"susheel",
        ],
      [
        "msg":"Aje dekhai nai",
        "name":"Jecky",
        "sender":78,
        "timestamp":1464244974198,
        "username":"Jecky",
        ],
      ]

    let a = NSArray.init(array: array)
    let filArray = a.ascendingArrayWithKeyValue(key: "timestamp")
    print(filArray)

score 1 · Answer 4 · answered May 27 '16 at 05:41

1

customArray.sortInPlace { 
  (element1, element2) -> Bool in
   return element1.someSortableField < element2.someSortableField
}

Check this out https://www.hackingwithswift.com/example-code/arrays/how-to-sort-an-array-using-sort

answered May 27 '16 at 05:41

Nagarjun

6,557
5
33
51

score 1 · Answer 5 · answered May 27 '16 at 05:45

1

To sort by property "timestamp"

array.sorted{$1["timestamp"] as? Long > $0["timestamp"] as? Long}

answered May 27 '16 at 05:45

SaRaVaNaN DM

4,390
4
22
30

score 0 · Answer 6 · edited May 23 '17 at 11:45

0

=> First, convert your Json to Objects. (check this link to do that :- http://roadfiresoftware.com/2015/10/how-to-parse-json-with-swift-2/ )

=> Then declare your Array as a typed array so that you can call methods when you iterate:

var array : [yourObjectClassName] = []

=> Then you can simply sort the value by :

array.sort({ $0.name > $1.name })

The above example sorts all the arrays by name. If you need to sort by timeStamp you can change the name to timeStamp ..etc

Check this link for more sorting examples : Swift how to sort array of custom objects by property value

edited May 23 '17 at 11:45

Community

1
1

answered May 27 '16 at 05:41

Ashok Varma

3,489
3
28
43

This does not look like JSON. – Thilo May 27 '16 at 05:44
i was refering @fnc12 answer and taught it was json :p – Ashok Varma May 27 '16 at 05:46

How to Sort an array in an ascending order swift 2.3

6 Answers6