Loading...

How to iterate an array in reverse in Swift?

question swift
Ram Patra Published on August 9, 2020
Version - Swift 5.0+

From Swift 5.0, you can use any of the following approaches to iterate an array in reverse.

A. Using reversed() method:

Example 1:

let numbers = (0 ... 3).reversed()

for num in numbers {
    print(num)
}

Output:

3
2
1
0

Example 2:

let languages = ["Java", "Swift", "Go"]

for language in languages.reversed() {
    print("\(language)")
}

Output:

Go
Swift
Java

B. Using stride() method:

Example 1:

let sequence = stride(from: 3, to: -1, by: -1)

for index in sequence {
    print(index)
}

Output:

3
2
1
0
Ram Patra Published on August 9, 2020
Image placeholder

Keep reading

If this article was helpful, others might be too

question macOS swift August 14, 2020 How to quit or close an app in macOS using Swift?

You can quit or exit an app with:NSApp.terminate(self)

question swift March 14, 2021 How to generate a random number in Swift?

You can use the random method in Int struct for this.

question macOS swift August 6, 2020 How to keep an app's window always on top of others in Swift?

Before launching the window, just use the appropriate window level, and you’re done.