---
title: "shuffled(using:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/array/shuffled(using:)"
---

# shuffled(using:)

Returns the elements of the sequence, shuffled using the given generator as a source for randomness.

## Declaration

```swift
func shuffled<T>(using generator: inout T) -> [Self.Element] where T : RandomNumberGenerator
```

## Parameters

- `generator`: The random number generator to use when shuffling the sequence.

## Return Value

Return Value An array of this sequence’s elements in a shuffled order.

## Discussion

Discussion You use this method to randomize the elements of a sequence when you are using a custom random number generator. For example, you can shuffle the numbers between 0 and 9 by calling the shuffled(using:) method on that range: let numbers = 0...9 let shuffledNumbers = numbers.shuffled(using: &myGenerator) // shuffledNumbers == [8, 9, 4, 3, 2, 6, 7, 0, 5, 1] note: O(n), where n is the length of the sequence. note: The algorithm used to shuffle a sequence may change in a future version of Swift. If you’re passing a generator that results in the same shuffled order each time you run your program, that sequence may change when your program is compiled using a different version of Swift.

## See Also

### Reordering an Array’s Elements

- [sort()](swift/array/sort().md)
- [sort(by:)](swift/array/sort(by:).md)
- [sorted()](swift/array/sorted().md)
- [sorted(by:)](swift/array/sorted(by:).md)
- [reverse()](swift/array/reverse().md)
- [reversed()](swift/array/reversed().md)
- [shuffle()](swift/array/shuffle().md)
- [shuffle(using:)](swift/array/shuffle(using:).md)
- [shuffled()](swift/array/shuffled().md)
- [partition(by:)](swift/array/partition(by:)-90po8.md)
- [swapAt(_:_:)](swift/array/swapat(_:_:).md)