Scala Stack apply()方法示例
在Scala Stack类中, apply() 方法用于返回堆栈中给定位置的元素。堆栈的顶部对应于位于0 th位置的元素,依此类推。
方法定义:def apply(idx:Int):A
返回类型:它返回堆栈中给定位置的元素。
示例1:
// Scala program of apply()
// method
import scala.collection.mutable.Stack
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a stack
val s1 = Stack(1, 2, 3, 4, 5)
// Print the stack
println(s1)
// Applying apply method
val result = s1.apply(0)
// Display output
println("Element at 0th position: " + result)
}
}
Stack(1, 2, 3, 4, 5)
Element at 0th position: 1
示例2:
// Scala program of apply()
// method
import scala.collection.mutable.Stack
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a stack
val s1 = Stack("C++", "Java", "Python", "Scala")
// Print the stack
println(s1)
// Applying apply method
val result = s1.apply(2)
// Display output
println("Element at 2nd position: " + result)
}
}
Stack(C++, Java, Python, Scala)
Element at 2nd position: Python
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