Kotlin Program to Print an Array

Example 1: Print an Array using For loop

fun main(args: Array<String>) {
    val array = intArrayOf(1, 2, 3, 4, 5)

    for (element in array) {
        println(element)
    }
}

When you run the program, the output will be:

1
2
3
4
5

In the above program, the for-each loop is used to iterate over the given array, array.

It accesses each element in the array and prints using println().

Example 2: Print an Array using standard library Arrays

import java.util.Arrays

fun main(args: Array<String>) {
    val array = intArrayOf(1, 2, 3, 4, 5)

    println(Arrays.toString(array))
}

When you run the program, the output will be:

[1, 2, 3, 4, 5]

In the above program, the for loop has been replaced by single line of code using Arrays.toString() function.

As you can see, this gives a clean output without any extra lines of code.

Example 3: Print a Multi-dimenstional Array

import java.util.Arrays

fun main(args: Array<String>) {
    val array = arrayOf(intArrayOf(1, 2),
            intArrayOf(3, 4),
            intArrayOf(5, 6, 7))

    println(Arrays.deepToString(array))
}

When you run the program, the output will be:

[[1, 2], [3, 4], [5, 6, 7]]

In the above program, since each element in array contains another array, just using Arrays.toString() prints the address of the elements (nested array).

To get the numbers from the inner array, we just another function Arrays.deepToString(). This gets us the numbers 1, 2 and so on, we are looking for.

This function works for  3-dimensional arrays as well.

Here's the equivalent Java code: Java program to print an array