Question

How to generate random floating point numbers in Kotlin

Answer 1

import kotlin.random.Random

fun generateRandomNumbers(n: Int, lower: Double, upper: Double): List<Double> {
    return List(n) { lower + (upper - lower) * Random.nextDouble() }
}

fun main() {
    val n = 10
    val lower = 0.0
    val upper = 3.0

    val randomNumbers = generateRandomNumbers(n, lower, upper)

    println(randomNumbers.joinToString(" ") { String.format("%.6f", it) })
}


/*
run:

1.252009 1.494544 1.229563 2.306142 0.992433 0.050440 2.077199 1.949221 0.382566 2.402671

*/

 

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