kotlin-stdlib/kotlin.random

Package kotlin.random

Provides the default generator of pseudo-random values, the repeatable generator, and a base class for other RNG implementations.

Types

Random
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Common
abstract class Random
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An abstract class that is implemented by random number generator algorithms.

Since Kotlin

1.3

Functions

asJavaRandom
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fun Random.asJavaRandom(): Random
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Creates a java.util.Random instance that uses the specified Kotlin Random generator as a randomness source.

Since Kotlin

1.3
asKotlinRandom
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fun Random.asKotlinRandom(): Random
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Creates a Kotlin Random instance that uses the specified java.util.Random generator as a randomness source.

Since Kotlin

1.3
nextInt
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Common
fun Random.nextInt(range: IntRange): Int
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Gets the next random Int from the random number generator in the specified range.

Since Kotlin

1.3
nextLong
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Common
fun Random.nextLong(range: LongRange): Long
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Gets the next random Long from the random number generator in the specified range.

Since Kotlin

1.3
nextUBytes
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Common
@ExperimentalUnsignedTypes
fun Random.nextUBytes(size: Int): UByteArray
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Creates an unsigned byte array of the specified size, filled with random bytes.

Since Kotlin

1.3
@ExperimentalUnsignedTypes
fun Random.nextUBytes(array: UByteArray): UByteArray
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Fills the specified unsigned byte array with random bytes and returns it.

Since Kotlin

1.3
@ExperimentalUnsignedTypes
fun Random.nextUBytes(array: UByteArray, fromIndex: Int = 0, toIndex: Int = array.size): UByteArray
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Fills a subrange of the specified UBytearray starting from fromIndex inclusive and ending toIndex exclusive with random UBytes.

Since Kotlin

1.3
nextUInt
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Common
fun Random.nextUInt(): UInt
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Gets the next random UInt from the random number generator.

Since Kotlin

1.5
fun Random.nextUInt(until: UInt): UInt
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Gets the next random UInt from the random number generator less than the specified until bound.

Since Kotlin

1.5
fun Random.nextUInt(range: UIntRange): UInt
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Gets the next random UInt from the random number generator in the specified range.

Since Kotlin

1.5
fun Random.nextUInt(from: UInt, until: UInt): UInt
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Gets the next random UInt from the random number generator in the specified range.

Since Kotlin

1.5
nextULong
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Common
fun Random.nextULong(): ULong
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Gets the next random ULong from the random number generator.

Since Kotlin

1.5
fun Random.nextULong(until: ULong): ULong
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Gets the next random ULong from the random number generator less than the specified until bound.

Since Kotlin

1.5
fun Random.nextULong(range: ULongRange): ULong
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Gets the next random ULong from the random number generator in the specified range.

Since Kotlin

1.5
fun Random.nextULong(from: ULong, until: ULong): ULong
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Gets the next random ULong from the random number generator in the specified range.

Since Kotlin

1.5
Random
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Common
fun Random(seed: Int): Random
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Returns a repeatable random number generator seeded with the given seedInt value.

Since Kotlin

1.3
fun Random(seed: Long): Random
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Returns a repeatable random number generator seeded with the given seedLong value.

Since Kotlin

1.3