How to Join Arrays in Kotlin - Step by Step Examples

How to Join Arrays in Kotlin ?

Answer

To join arrays in Kotlin, you can use the plus operator or the plus method to concatenate two arrays into a single array.

✐ Examples

1 Join Two Arrays of Integers

In this example,

We create two arrays named arr1 and arr2 with integer values.
We use the plus operator to join arr1 and arr2 into a single array named result.
The plus operator concatenates the two arrays, resulting in a new array that contains all the elements of both arrays.
Finally, we print the concatenated array to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val arr1 = arrayOf(1, 2, 3)
    val arr2 = arrayOf(4, 5, 6)
    val result = arr1 + arr2
    println("Joined array: ${result.joinToString()}")
}

Output

Joined array: 1, 2, 3, 4, 5, 6

2 Join Two Arrays of Strings

In this example,

We create two arrays named arr1 and arr2 with string values.
We use the plus method to join arr1 and arr2 into a single array named result.
The plus method concatenates the two arrays, resulting in a new array that contains all the elements of both arrays.
Finally, we print the concatenated array to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val arr1 = arrayOf("apple", "banana")
    val arr2 = arrayOf("cherry", "date")
    val result = arr1.plus(arr2)
    println("Joined array: ${result.joinToString()}")
}

Output

Joined array: apple, banana, cherry, date

Summary

In this tutorial, we learned How to Join Arrays in Kotlin language with well detailed examples.

◀ Previous Next ▶

Kotlin Tutorials

Kotlin How-Tos

How to Join Arrays in Kotlin - Step by Step Examples

How to Join Arrays in Kotlin ?

Answer

✐ Examples

1 Join Two Arrays of Integers

Kotlin Program

Output

2 Join Two Arrays of Strings

Kotlin Program

Output

Summary

More Kotlin Arrays Tutorials