以下命名姓名开头字母,如hxz,以下 hxz全部改为自己名字开头字母。
val hxzArr1 = {for(i <- 1 to 10 )yield (new util.Random).nextInt(10)}.toArray
val hxzArr2= Array("aaa","bbb","ccc","ddd")
println(hxzArr2(1))
for(i <- 0 to (hxzArr1.length - 1))
print(hxzArr1(i) + "\t")
val hxzArr3 = for(i <- hxzArr1 if i%2==0 )yield i
hxzArr1.sum
hxzArr1.max
hxzArr1.min
hxzArr1.sorted
import scala.collection.mutable.ArrayBuffer
val hxzArr2=ArrayBuffer[String]()
hxzArr2 += ("200000","xxxxxx","xxxxx","xxxxx")
for(i <- 0 to (hxzArr2.length - 1))
println(hxzArr2(i))
//个人觉得是集合
val hxzSet1=hxzArr1.toSet
val hxzSet2=Set(2,4,10)
hxzSet2.&(hxzSet1)
val hxzList1=List(1,2,3,4,5)
hxzList1.head
hxzList1.tail
val hxzList2=List(1,4,5,6,8)
val hxzList3=hxzList1:::hxzList2
hxzList3.distinct
val hxzMap1=Map("A"->"90","B"->"80","C"->"70")
val hxzArr4=Array(("tom",88),("jerry",95))
hxzArr4.toMap