Swift Sorting

Swift Sorting

Sort arrays with sorted() (returns new) or sort() (in-place). Provide a closure for custom order.

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Sort

Sort ascending using sorted() and descending in-place using sort(by:).

Example

var nums = [3, 1, 2]
let ascending = nums.sorted()
print(ascending)      // [1, 2, 3]
nums.sort(by: >)
print(nums)           // [3, 2, 1]

This example sorts ascending using sorted() and descending in-place using sort(by:).

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Case-Insensitive Sort

Provide a custom closure to sort strings without regard to case.

Example

let names = ["bob", "Alice", "dave"]
let caseInsensitive = names.sorted { $0.lowercased() < $1.lowercased() }
print(caseInsensitive) // ["Alice", "bob", "dave"]