scala入门初级代码训练-37listBufferArrayBufferQueueStack

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原文地址： http://www.ptbird.cn/2016/07/19/scala-chuji-demo-37/ ‎
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package com.ptbird.scala

import scala.collection.mutable.{ArrayBuffer, ListBuffer}


/**
  * Created by postbird on 2016/5/26.
  */
object ListArrayQueueStackBuffer {
  def main(args: Array[String]): Unit = {
    val listBuffer = new ListBuffer[Int]
    listBuffer += 1
    listBuffer += 1
    println(listBuffer)
    //ListBuffer(1, 1)
    val arrayBuffer = new ArrayBuffer[Int]()
    arrayBuffer += 1
    arrayBuffer += 2
    arrayBuffer.foreach(print) //12


    import scala.collection.mutable.Queue

    val queue = Queue[String]()
    queue += "aa"
    queue ++= List("bb", "cc")
    println(queue)
    println(queue.dequeue()) //出队操作
    println(queue)

    //    Queue(aa, bb, cc)
    //    aa
    //    Queue(bb, cc)

    import scala.collection.mutable.Stack
    val stack = new Stack[Int]
    stack.push(1)
    stack.push(2)
    stack.push(3)
    println(stack.top)
    println(stack)
    println(stack.pop)
    println(stack)
//    3
//    Stack(3, 2, 1)
//    3
//    Stack(2, 1)
  }
}

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