Clone an array in Kotlin

This post will discuss various functions to clone an array in Kotlin.

1. Using `clone()` function

fun <T> copy(arr: Array<T>): Array<T> {

return arr.clone()

}

fun main() {

val from = arrayOf(6, 7, 5, 2, 4)

val to = copy(from)

println(to.contentToString()) // [6, 7, 5, 2, 4]

}

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2. Using `copyOf()` function

fun <T> copy(arr: Array<T>): Array<T?> {

return arr.copyOf(arr.size)

}

fun main() {

val from = arrayOf(6, 7, 5, 2, 4)

val to = copy(from)

println(to.contentToString()) // [6, 7, 5, 2, 4]

}

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3. Using `copyOfRange()` function

fun <T> copy(arr: Array<T>): Array<T> {

return arr.copyOfRange(0, arr.size)

}

fun main() {

val from = arrayOf(6, 7, 5, 2, 4)

val to = copy(from)

println(to.contentToString()) // [6, 7, 5, 2, 4]

}

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4. Using `arraycopy()` function

fun copy(arr: Array<Int>): Array<Int?> {

val to = arrayOfNulls<Int>(arr.size)

System.arraycopy(arr, 0, to, 0, arr.size)

return to

}

fun main() {

val from = arrayOf(6, 7, 5, 2, 4)

val to = copy(from)

println(to.contentToString()) // [6, 7, 5, 2, 4]

}

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That’s all about cloning an array in Kotlin.

1. Using clone() function

2. Using copyOf() function

3. Using copyOfRange() function

4. Using arraycopy() function

Share this:

1. Using `clone()` function

2. Using `copyOf()` function

3. Using `copyOfRange()` function

4. Using `arraycopy()` function