Question

How to select random two consecutive digits from a number in Scala

Answer 1

import scala.util.Random

object RandomTwoDigitsApp {

  def getRandomTwoDigits(num: Int): String = {
    val s = num.toString

    if (s.length < 2) {
      "Error: number must have at least 2 digits"
    } else {
      val start = Random.nextInt(s.length - 1) 
      s.substring(start, start + 2)
    }
  }

  def main(args: Array[String]): Unit = {
    val num = 1234567
    
    val randomTwo = getRandomTwoDigits(num)
    println(s"Random two digits: $randomTwo")
  }
}




/*
run:

Random two digits: 12

*/

 

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