sort

actual fun IntArray.sort()(source)

actual fun LongArray.sort()(source)

actual fun ByteArray.sort()(source)

actual fun ShortArray.sort()(source)

actual fun DoubleArray.sort()(source)

actual fun FloatArray.sort()(source)

actual fun CharArray.sort()(source)

Sorts the array in-place.

Since Kotlin

1.0

Samples



import kotlin.test.*
fun main() { 
   //sampleStart 
   val intArray = intArrayOf(4, 3, 2, 1)

// before sorting
println(intArray.joinToString()) // 4, 3, 2, 1

intArray.sort()

// after sorting
println(intArray.joinToString()) // 1, 2, 3, 4 
   //sampleEnd
}

actual inline fun <T : Comparable<T>> Array<out T>.sort()(source)

Sorts the array in-place according to the natural order of its elements.

The sort is stable. It means that equal elements preserve their order relative to each other after sorting.

Since Kotlin

1.0

Samples



import kotlin.test.*
fun main() { 
   //sampleStart 
   class Person(val firstName: String, val lastName: String) : Comparable<Person> {
    override fun compareTo(other: Person): Int = this.lastName.compareTo(other.lastName)
    override fun toString(): String = "$firstName $lastName"
}

val people = arrayOf(
    Person("Ragnar", "Lodbrok"),
    Person("Bjorn", "Ironside"),
    Person("Sweyn", "Forkbeard")
)

// before sorting
println(people.joinToString()) // Ragnar Lodbrok, Bjorn Ironside, Sweyn Forkbeard

people.sort()

// after sorting
println(people.joinToString()) // Sweyn Forkbeard, Bjorn Ironside, Ragnar Lodbrok 
   //sampleEnd
}

fun <T> Array<out T>.sort()(source)

Sorts the array in-place according to the natural order of its elements.

The sort is stable. It means that equal elements preserve their order relative to each other after sorting.

Since Kotlin

1.0

Throws

ClassCastException

if any element of the array is not Comparable.

actual fun ByteArray.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

actual fun ShortArray.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

actual fun IntArray.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

actual fun LongArray.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

actual fun FloatArray.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

actual fun DoubleArray.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

actual fun CharArray.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

Sorts a range in the array in-place.

Since Kotlin

1.0

Samples



import kotlin.test.*
fun main() { 
   //sampleStart 
   val intArray = intArrayOf(4, 3, 2, 1)

// before sorting
println(intArray.joinToString()) // 4, 3, 2, 1

intArray.sort(0, 3)

// after sorting
println(intArray.joinToString()) // 2, 3, 4, 1 
   //sampleEnd
}

Parameters

fromIndex

the start of the range (inclusive) to sort, 0 by default.

toIndex

the end of the range (exclusive) to sort, size of this array by default.

Throws

IndexOutOfBoundsException

if fromIndex is less than zero or toIndex is greater than the size of this array.

IllegalArgumentException

if fromIndex is greater than toIndex.

fun <T> Array<out T>.sort(fromIndex: Int = 0, toIndex: Int = size)(source)

Sorts a range in the array in-place.

The sort is stable. It means that equal elements preserve their order relative to each other after sorting.

Since Kotlin

1.0

Samples



import kotlin.test.*
fun main() { 
   //sampleStart 
   class Person(val firstName: String, val lastName: String) : Comparable<Person> {
    override fun compareTo(other: Person): Int = this.lastName.compareTo(other.lastName)
    override fun toString(): String = "$firstName $lastName"
}

val people = arrayOf(
    Person("Ragnar", "Lodbrok"),
    Person("Bjorn", "Ironside"),
    Person("Sweyn", "Forkbeard")
)

// before sorting
println(people.joinToString()) // Ragnar Lodbrok, Bjorn Ironside, Sweyn Forkbeard

people.sort(0, 2)

// after sorting
println(people.joinToString()) // Bjorn Ironside, Ragnar Lodbrok, Sweyn Forkbeard 
   //sampleEnd
}

Parameters

fromIndex

the start of the range (inclusive) to sort, 0 by default.

toIndex

the end of the range (exclusive) to sort, size of this array by default.

Throws

IndexOutOfBoundsException

if fromIndex is less than zero or toIndex is greater than the size of this array.

IllegalArgumentException

if fromIndex is greater than toIndex.

actual fun <T : Comparable<T>> MutableList<T>.sort()(source)

Sorts elements in the list in-place according to their natural sort order.

The sort is stable. It means that equal elements preserve their order relative to each other after sorting.

Since Kotlin

1.0

Samples



import kotlin.test.*
fun main() { 
   //sampleStart 
   val mutableList = mutableListOf(4, 3, 2, 1)

// before sorting
println(mutableList.joinToString()) // 4, 3, 2, 1

mutableList.sort()

// after sorting
println(mutableList.joinToString()) // 1, 2, 3, 4 
   //sampleEnd
}

inline fun <T> MutableList<T>.~~sort~~(comparator: Comparator<in T>)(source)

Deprecated (with error)

Use sortWith(comparator) instead.

Replace with

this.sortWith(comparator)

Since Kotlin

1.0

inline fun <T> MutableList<T>.~~sort~~(comparison: (T, T) -> Int)(source)

Deprecated (with error)

Use sortWith(Comparator(comparison)) instead.

Replace with

this.sortWith(Comparator(comparison))

Since Kotlin

1.0