Question

How to cyclically rotate the elements of int array right by one in Swift

Answer 1

func rotateRightByOne(_ arr: inout [Int]) {
    if arr.isEmpty { return }

    let lastElement = arr.removeLast()
    
    arr.insert(lastElement, at: 0)
}

var array = [4, 7, 2, 9, 3]

rotateRightByOne(&array)

print(array)




/*
run:

Swift let func Programming return

*/

 

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