How to reverse sort an array
Swift version: 5.0
Regular sorting on comparable data is as easy as calling the sort() method, but if you want a reverse sort – e.g. highest to lowest numbers, or Z-A alphabetically – there are two options.
The first is to run a regular sort, reverse that sort, then convert the result to an array. For example:
let numbers = [100, 5, 53, 98, 29]
let reversed1 = Array(numbers.sorted().reversed())The second option is to provide a custom closure to the sorted() method that sorts the opposite way to the default, like this:
let reversed2 = numbers.sorted { $0 > $1 }Both of those will result in the array 100, 98, 53, 29, 5.
SPONSOR Tired of wasting time debugging your Swift app? Instabug’s SDK is here to help you minimize your debugging time by providing you with complete device details, network logs, and reproduction steps with every bug report. All data is attached automatically. It only takes a line of code to setup. Get started for free.
Available from iOS 8.0
Did this solution work for you? Please pass it on!
Other people are reading…
- How to specify your own date format with Codable and JSONEncoder
- What does an exclamation mark mean?
- How to constrain a protocol associated type
- How to add associated values to enums
- How to add Markdown comments to your code
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
