Minesweeper board init

Minesweeper.scala

import scala.util.Random

object Main {
    type Board = List[List[Int]]

    def main(argv: Array[String]) = {

        val size: (Int, Int) = (80, 80)
        val bombs = 250

        print_board(setup_board(size, bombs))
    }

    def print_board(board: Board) =
      for(
        row <- board
      ) print_row(row)

    def print_row(row: List[Int]) = {
      for(
        col <- row
      ) {
        if(col == 1)
            print("X")
        else
            print(".")
      }

      println()
    }

    def setup_board(size: (Int, Int), k: Int): Board = {
        val ones: List[Int] = Array.fill(k)(1).toList
        val zeros: List[Int]  = Array.fill(size._1 * size._2 - k)(0).toList
        val random_pos: List[Int] = Random.shuffle(
            ones ++ zeros
        )

        random_pos.grouped(size._1).toList
    }
}