import scala.collection.mutable

/**

  *  映射和元组

  *

  * @author xwolf

  * @date 2017-04-12 11:23

  * @since 1.8

  */

object MapTest {

  def main(args: Array[String]): Unit = {

    tuple()

  }

  private def map(): Unit ={

    //定义映射 ->对偶操作

    var map =Map("id"->1,"name"->"王思琪",("age",10))

    var twoMap = Map("detail"->"优秀屌丝","state"->0)

    // += 添加K-V

    map += ("birth"->"20160101")

    //移除 key value

    map -= "id"

    //两个映射合并

    val newMap = map ++ twoMap

    println(newMap)

    println(map("name"))//map取值

    val name = if (map.contains("name1")) map("name") else None

    println(name)

    //映射遍历

    for (elem <- map) {

      println(elem)

    }

    for((k,v)<-map){

       println(k+","+v)

     }

    val keys = map.keySet

    for(k<-keys){

      println("k="+k+",value="+map(k))

    }

    // k v 互换 生成新的map

    val kMap = for((k,v)<-map) yield (v,k)

    println(kMap)

    //有序map 底层是java 的TreeMap

    val sortMap= mutable.SortedMap("a"->1,"age"->122,"state"->0,"name"->"老王")

    println(sortMap)

  }

  /**

    * 元组操作

    */

  def tuple(): Unit ={

    //元组定义

    val tuple =(1,2,12,4,15)

    println(tuple)

    println(tuple._3)//获取第三个元素,非下标

    println(tuple _3)//获取第三个元素,非下标

    val one = Array("Hello","Scala","Java")

    val two =Array(1,2,3)

    //拉链操作 将两个数组合并为Map

    val ou =one.zip(two)

    println(ou.toBuffer)

  }

}