Sorting Array in Swift3 Sorting Array in Swift3 arrays arrays

Sorting Array in Swift3


If you want to sort alphabetically and then numerically, you can:

var array = ["A2", "B7", "A4", "C3", "A1", "A10"]array.sort { $0.compare($1, options: .numeric) == .orderedAscending }

That produces:

["A1", "A2", "A4", "A10", "B7", "C3"]

I added A10 to your array, because without it, a simple alphabetic sort would have been sufficient. But I'm assuming you wanted A10 after A4, in which case the numeric comparison will do the job for you.


You changed the example to be a struct with two properties. In that case, you can do something like:

struct Foo {    var name: String    var count: Int}var array = [    Foo(name:"A", count: 2),    Foo(name:"B", count: 7),    Foo(name:"A", count: 7),    Foo(name:"C", count: 3),    Foo(name:"A", count: 1),    Foo(name:"A", count: 10)]array.sort { (object1, object2) -> Bool in    if object1.name == object2.name {        return object1.count < object2.count    } else {        return object1.name < object2.name    }}

Or, more concisely:

array.sort { $0.name == $1.name ? $0.count < $1.count : $0.name < $1.name }

Or

array.sort { ($0.name, $0.count) < ($1.name, $1.count) }

Note, rather than putting this logic in the closure, I'd actually make Foo conform to Comparable:

struct Foo {    var name: String    var count: Int}extension Foo: Equatable {    static func ==(lhs: Foo, rhs: Foo) -> Bool {        return (lhs.name, lhs.count) == (rhs.name, rhs.count)    }}extension Foo: Comparable {    static func <(lhs: Foo, rhs: Foo) -> Bool {        return (lhs.name, lhs.count) < (rhs.name, rhs.count)    }}

This keeps the comparison logic nicely encapsulated within the Foo type, where it belongs.

Then you can just do the following to sort in place:

var array = ...array.sort()

Or, alternatively, you can return a new array if you don't want to sort the original one in place:

let array = ...let sortedArray = array.sorted()


Narusan, maybe this will help you.Let's say you have an array with your struct objects called objArray, then you can order it by the code bellow:

var objArray = [Object]()objArray.append(Object(name:"Steve", count:0))objArray.append(Object(name:"Alex", count:1))objNameSorted = objArray.sorted (by: {$0.name < $1.name})objNCountSorted = objArray.sorted (by: {$0.count < $1.count})


You can still use shorthand for sorted:

objNameSorted = objArray.sorted { $0 < $1 }

While less readable, it more closely mimics the sort syntax.