The swapAt() method swaps two elements at the specified indices of the array.
Example
var numbers = [2, 6, 4, 8]
// swap 6 and 4
numbers.swapAt(1, 2)
print(numbers)
// Output: [ 2, 4, 6, 8 ]
swapAt() Syntax
The syntax of the array swapAt() method is:
array.swapAt(index1: Int, index2: Int)
Here, array is an object of the Array class.
swapAt() Parameters
The swapAt() method takes two parameters:
- index1 - index of the first element to swap
- index2 - index of the second element to swap
swapAt() Return Value
The swapAt() method doesn't return any value. It only swaps elements of the current array.
Example 1: Swift Array swapAt()
var languages = ["Swift", "C", "Java"]
// swap "C" and "Java"
languages.swapAt(1, 2)
print(languages)
var priceList = [12, 21, 35]
// swap 12 and 35
priceList.swapAt(0,2)
print(priceList)
Output
["Swift", "Java", "C"] [35, 21, 12]
Here,
- For the languages array, we have swapped the elements of index 1 and index 2.
- Similarly, for the priceList array, we have swapped the elements of index 0 and index 2.