object D01_遍历集合 {

  def main(args: Array[String]): Unit = {
    val list: List[Int] = (1 to 5).toList
    // 获取迭代器
    val iterator: Iterator[Int] = list.iterator
    while (iterator.hasNext) {
      println(iterator.next())
    }

    println("-" * 15)

    // foreach
    list.foreach((x: Int) => println(x))

    println("-" * 15)

    // 简化版
    list.foreach(println(_))
  }

}