How to create a List of size N in Kotlin

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How to create a List of size N in Kotlin ?

Answer

To create a list of size N in Kotlin, you can use the List constructor or the MutableList constructor.

✐ Examples

1 Create a List of Size N with Default Values

In this example,

We use the List constructor with the size and a lambda function to create a list of size N, with each element initialized to a default value.
The lambda function takes the index as a parameter and returns the default value for that position.
Finally, we print the created list to standard output.

Kotlin Program

fun main() {
    val size = 5
    val list = List(size) { 0 }
    println("List of size $size with default values: $list")
}

Output

List of size 5 with default values: [0, 0, 0, 0, 0]

2 Create a MutableList of Size N with Default Values

In this example,

We use the MutableList constructor with the size and a lambda function to create a mutable list of size N, with each element initialized to a default value.
The lambda function takes the index as a parameter and returns the default value for that position.
Finally, we print the created mutable list to standard output.

Kotlin Program

fun main() {
    val size = 5
    val mutableList = MutableList(size) { "" }
    println("MutableList of size $size with default values: $mutableList")
}

Output

MutableList of size 5 with default values: [, , , , ]

Summary

In this tutorial, we learned How to create a List of size N in Kotlin language with well detailed examples.

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How to create a List of size N in Kotlin

How to create a List of size N in Kotlin ?

Answer

✐ Examples

1 Create a List of Size N with Default Values

Kotlin Program

Output

2 Create a MutableList of Size N with Default Values

Kotlin Program

Output

Summary

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