Kotlin – Add Array to Array

Add another Array to this Array in Kotlin

To add another Array to this Array in Kotlin, you can use Addition Assignment operator. Use the operator and pass the Array as left operand, and the other Array as right operand.

The syntax to add another Array anotherArray to this Array arr is

arr += anotherArray

Elements of the second Array are appended to the first Array.

Examples

Add otherFruits Array to the fruitNames Array

In the following program, we take two Arrays of strings: fruitNames and otherFruits. We use Addition Assignment operator to add the elements of the otherFruits Array to the fruitNames Array.

Kotlin Program

fun main(args: Array<String>) {
    var fruitNames = arrayOf("apple", "banana", "cherry")
    var otherFruits = arrayOf("mango", "fig")
    fruitNames += otherFruits
    println(fruitNames.contentToString())
}

Output

[apple, banana, cherry, mango, fig]