多重循环

object basic23 {
  def main(args:Array[String]):Unit={
    for(i <- 1 to 5){
      println(i)
      for(j<- 1 to 10){
        println(i,j)
      }
    }
  }

}

object basic24 {
  def main(args:Array[String]):Unit={
    for(i <- 1 to 5){
      for(j <- 1 to i){
        print(i)
      }
      println()
    }
  }
}

object basic24 {
  def main(args:Array[String]):Unit={
    for(i <- 5 to 1 by -1){
      for(j <- 1 to i){
        print(i)
      }
      println()
    }
  }
}