Scala集合{Array、Map、Tuple}

叙述：使用数组，映射和元组分别打印一种水果对应的数量

1.使用数组Array

/*  使用数组   */
println("====== 使用数组 ======")
val fruits_A = Array("litchi","apple","grape")
var fru_num = Array(6,1,6)
fru_num(2) = 8

var i = 0
while(i < 3){
  println("水果   " + fruits_A(i) + "    " + fru_num(i))
  i += 1
}

Array打印结果

2.使用映射Map

/*  使用映射  */
println("====== 使用映射 ======")
val  fruits_M = scala.collection.mutable.Map("litchi" -> 5, "apple" -> 2, "grape" -> 9)
fruits_M("grape") = 0

println("水果   " + "litchi" + "    " + fruits_M("litchi"))
println("水果   " + "apple " + "    " + fruits_M("apple"))
println("水果   " + "grape " + "    " + fruits_M("grape"))

Map打印结果

 

3.使用元组Tuple

/*  使用元组  */
println("====== 使用元组 ======")
val fruits_T = ("litchi", 9, "apple", 9, "grape", 6)

println("水果   " + fruits_T._1 + "    " + fruits_T._2)
println("水果   " + fruits_T._3 + "    " + fruits_T._4)
println("水果   " + fruits_T._5 + "    " + fruits_T._6)

Tuple打印结果