Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How can I get a random number in Kotlin?
Kotlin provides multiple ways to generate a random number. In this article, we will see different ways to generate a random number and access it throughout the program.
Example – Using Random class
Random() is an abstract class which generates random numbers with the given conditions. It can be accessed after importing Kotlin.random.Random.
As per the Kotlin documentation, the companion object Random.Default is the default instance of Random class. In the following example, we will generate a list of random values with int (1-30) .
Example
import kotlin.random.Random
fun main() {
val myRandomValues = List(5) { Random.nextInt(0, 30) }
// Prints a new sequence every time
println(myRandomValues)
}Output
It generated the following random numbers. You may get a different set of numbers, as the output is random in nature.
[8, 21, 16, 29, 16]
Example – Using random()
Kotlin does provide a random() function to generate random numbers. It takes a series of numbers as an input and it returns a random Int as an output.
Example
fun main() {
// It generates a random number between 0 to 10
println((0..10).random())
}Output
On execution, it produced the following output −
0
Example – Using shuffled()
Kotlin does provide another method to generate random numbers between a sequence. We can use shuffled() to generate a random number in between 1 to 100.
Example
fun main() {
val random1 = (0..100).shuffled().last()
println(random1)
}Output
On execution, it produced the following output. It could be different in your case, as the output is random in nature.
42
12K+ Views
