Scala Vector
Scala Vector
Vector 是一种通用的、不可变的数据结构。它提供元素的随机访问。它适用于大型元素集合。
它扩展了抽象类 AbstractSeq 和 IndexedSeq trait。
Scala 向量示例
import scala.collection.immutable._
object MainObject{
def main(args:Array[String]){
var vector:Vector[Int] = Vector(5,8,3,6,9,4) //Or
var vector2 = Vector(5,2,6,3)
var vector3 = Vector.empty
println(vector)
println(vector2)
println(vector3)
}
}
输出:
Vector(5, 8, 3, 6, 9, 4)
Vector(5, 2, 6, 3)
Vector(
Scala 向量示例
在下面的示例中，我们创建了一个向量。您还可以添加新元素并合并两个向量。
import scala.collection.immutable._
object MainObject{
def main(args:Array[String]){
var vector = Vector("Hocky","Cricket","Golf")
var vector2 = Vector("Swimming")
print("Vector Elements: ")
vector.foreach((element:String) => print(element+" "))
var newVector = vector :+ "Racing" // Adding a new element into vector
print("\nVector Elements after adding: ")
newVector.foreach((element:String) => print(element+" "))
var mergeTwoVector = newVector ++ vector2 // Merging two vector
print("\nVector Elements after merging: ")
mergeTwoVector.foreach((element:String) => print(element+" "))
var reverse = mergeTwoVector.reverse // Reversing vector elements
print("\nVector Elements after reversing: ")
reverse.foreach((element:String) => print(element+" "))
var sortedVector = mergeTwoVector.sorted // Sorting vector elements
print("\nVector Elements after sorting: ")
sortedVector.foreach((element:String) => print(element+" "))
}
}
输出:
Vector Elements: Hocky Cricket Golf
Vector Elements after adding: Hocky Cricket Golf Racing
Vector Elements after merging: Hocky Cricket Golf Racing Swimming
Vector Elements after reversing: Swimming Racing Golf Cricket Hocky
Vector Elements after sorting: Cricket Golf Hocky Racing Swimming
