arrayListOf  
  Returns a new ArrayList with the given elements.
Since Kotlin
1.0Samples
import kotlin.test.*
fun main() { 
   //sampleStart 
   val list = arrayListOf(1, 2, 3)
println(list) // [1, 2, 3]
list += listOf(4, 5)
println(list) // [1, 2, 3, 4, 5] 
   //sampleEnd
}