Update List with Loop Arguments Scala

Question

I'm trying create new random List based on other List. But this code doesn't work to update the var

import scala.util.Random
import scala.math

val randSymbol = List(1,2,2,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,6,6,7,7,7,7,7,7,8)
val _finalSymbol = List(List(0,0,0,0,0),List(0,0,0,0,0),List(0,0,0,0,0))
    var i:Int = 0
    var a:Int = 0
    for (i <- 0 to 2){
      _finalSymbol(i) = new List
      for (a <- 0 to 4){
        var iRandIndex = floor(Random.nextInt() * randSymbol.length).toInt
        var iRandSymbol = randSymbol(iRandIndex)
        _finalSymbol(i)(a) = iRandSymbol
      }
    }

Answer 1

Try something like this:

val _finalSymbol = (0 to 2) map { _ => Random.shuffle(randSymbol).take(5) }

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