Arrays can also be initialized with null. To do this, call the arrayOfNulls function and mention the type to be stored in it:

fun nulls() {
    val nullArray = arrayOfNulls<String>(5)
    nullArray.set(0,"hello")
    nullArray.set(3,"kotlin")
 
    for (i in nullArray){
        println(i)
    }
}

This code assigns string values to the 0 and 3 indexes and prints the null array on the screen.