Question

How to choose a random element from an array in Scala

Answer 1

import scala.util.Random

object O {
    def main(args: Array[String]): Unit = {
        val arr: Array[Int] = Array(1, 2, 3, 4, 5, 6, 7, 8, 9, 0)

        println(arr(Random.nextInt(arr.size)))
        println(arr(Random.nextInt(arr.size)))
    }
}
   
    
    
    
/*
run:
    
3
9
    
*/

 

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Answer 2

import scala.util.Random

object O {
    def main(args: Array[String]): Unit = {
        val arr = Array("c", "c++", "java", "python", "php", "scala", "ruby", "swift")

        println(arr(Random.nextInt(arr.size)))
        println(arr(Random.nextInt(arr.size)))
    }
}
   
    
    
    
/*
run:
    
scala
python
    
*/

 

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