ProgramGuruTo rotate elements in an array in Kotlin, you can use a combination of array slicing and array concatenation to shift elements to the left or right.
In this example,
array with integer values.sliceArray method to extract the last element of the array.sliceArray method again to extract all elements except the last one.fun main() {
val array = arrayOf(1, 2, 3, 4, 5)
val rotatedArray = arrayOf(array.last()) + array.sliceArray(0 until array.size - 1)
println("Original Array: ${array.joinToString()}")
println("Rotated Array: ${rotatedArray.joinToString()}")
}Original Array: 1, 2, 3, 4, 5 Rotated Array: 5, 1, 2, 3, 4
In this example,
array with string values.sliceArray method to extract all elements except the first one.sliceArray method again to extract the first element of the array.fun main() {
val array = arrayOf("a", "b", "c", "d", "e")
val rotatedArray = array.sliceArray(1 until array.size) + arrayOf(array.first())
println("Original Array: ${array.joinToString()}")
println("Rotated Array: ${rotatedArray.joinToString()}")
}Original Array: a, b, c, d, e Rotated Array: b, c, d, e, a
In this tutorial, we learned How to Rotate Elements in an Array in Kotlin language with well detailed examples.