Swift Array Programming Exercises: Swap the first and last elements of a given array of integers
Swift Array Programming: Exercise-19 with Solution
Write a Swift program to swap the first and last elements of a given array of integers. Return the modified array (length will be at least 1).
Pictorial Presentation:
Sample Solution:
Swift Code:
func swap_elements(_ a: [Int]) -> [Int] {
var new_array = a
let first_element = new_array.removeFirst()
let last_element = new_array.removeLast()
new_array.insert(last_element, at: new_array.startIndex)
new_array.append(first_element)
return new_array
}
print(swap_elements([1, 2, 3, 4]))
print(swap_elements([1, 2, 3]))
print(swap_elements([11, 12, 13, 14, 15]))
Sample Output:
[4, 2, 3, 1] [3, 2, 1] [15, 12, 13, 14, 11]
Swift Programming Code Editor:
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https://www.w3resource.com/swift-programming-exercises/array/swift-array-exercise-19.php
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