getOrNull

Returns an element at the given index or null if the index is out of bounds of this array.

fun <T> Array<out T>.getOrNull(index: Int): T?(source)

fun main() {
    val fruits = arrayOf("apple", "banana", "cherry")

    // Valid index
    val secondFruit = fruits.getOrNull(1)
    println(secondFruit)            // prints "banana"

    // Out-of-bounds index
    val invalidFruit = fruits.getOrNull(5)
    println(invalidFruit)           // prints "null"
}

Source