Question

How to shift elements of an array to the right by one position in Kotlin

Answer 1

fun shiftRight(arr: MutableList<Int>) {
    if (arr.isEmpty()) return

    val last = arr.last()
    for (i in arr.size - 1 downTo 1) {
        arr[i] = arr[i - 1]
    }
    arr[0] = last
}

fun printArray(arr: List<Int>) {
    println(arr.joinToString(" "))
}

fun main() {
    val numbers = mutableListOf(0, 1, 2, 3, 4, 5, 6)
    
    shiftRight(numbers)
    printArray(numbers)
}

 
  
/*
run:
  
6 0 1 2 3 4 5

*/

 

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