/**
学习Tuple 元组类型
*/
object Demo {
  println("Welcome to the Scala worksheet")       //> Welcome to the Scala worksheet
  
  //声明一个元组
  val t1=(1,2,"hello")                            //> t1  : (Int, Int, String) = (1,2,hello)
  
  val t2=(1,2,Array(3,4),List(5,6))               //> t2  : (Int, Int, Array[Int], List[Int]) = (1,2,Array(3, 4),List(5, 6))
  
  //元组取值,通过._下标取值
  //注意:元组的下标从1开始
  t1._3                                           //> res0: String = hello
  
  //练习1:取出t3的数字4
  val t3=(1,2,(3,4))                              //> t3  : (Int, Int, (Int, Int)) = (1,2,(3,4))
  
  t3._3._2                                        //> res1: Int = 4
  
  //练习2:取出t4中的数字6
  val t4=(1,2,(3,4),(5,Array(6,7)))               //> t4  : (Int, Int, (Int, Int), (Int, Array[Int])) = (1,2,(3,4),(5,Array(6, 7))
                                                  //| )
  t4._4._2(0)                                     //> res2: Int = 6
  
  
  
  
}