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How to shuffle an array in Swift

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In Swift, we can use two methods to shuffle an array:

  • shuffle

  • shuffled

Both the shuffle and shuffled methods reorder the elements of an array randomly.

When we use the shuffle method, the elements are shuffled in-place. shuffle happens in the original array.

When we use the shuffled method, the elements are shuffled and returned as a new array. The old array remains untouched.

Shuffle example

import Swift

var numbers = [Int](1...5)
print("The array is :-  \(numbers)")


print("Shuffling array")
numbers.shuffle()

print(numbers)

In the above code, we have created an array numbers with five items and called the shuffle() method to shuffle the array’s items in place. Now, when we print the number array, the numbers array elements will be shuffled.

Shuffled example

import Swift

var numbers = [Int](1...5)
print("The array is :-  \(numbers)")

var shuffledArray = numbers.shuffled()

print("\nAfter Shuffling array the value of  Array -> \(numbers)")

print("\nAfter Shuffling array the value of shuffled Array -> \(shuffledArray)")

In the code above, we have created a numbers array with five items and called the shuffled() method to shuffle the array’s items. The shuffled method will shuffle and return a new array. The numbers array remains unchanged. We then print it to check the order of numbers and shuffledArray.

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swift
array
shuffle
javascript
communitycreator
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