Bubble sort with recursion implemented in kotlin

BubbleSortRecursion.kt

    fun bubbleSort(inputArray: Array<Int>, nextIterIndex: Int = inputArray.size): Array<Int> {
        // This print is for see the interactions in sort algorithm
        println("iteration number ${inputArray.size - nextIterIndex+1}")

        val lastIndex = nextIterIndex -1
        var isSorted = true

        for (i in 0 until lastIndex) {
            val currentItem = inputArray[i]
            val nextItem = inputArray[i+1]

            if (currentItem > nextItem) {
                inputArray[i] = nextItem
                inputArray[i+1] = currentItem
                isSorted = false
            }
        }

        return if (isSorted) {
            inputArray
        } else {
            bubbleSort(inputArray, lastIndex)
        }
    }