Scala Stack top() 方法与示例
在 Scala Stack class
中, top()方法用于返回堆栈的顶部元素。
Method Definition: def top: A
Return Type: It returns the top element of the stack.
示例 #1:
// Scala program of top()
// method
// Import Stack
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating stack
val s1 = Stack(1, 3, 2, 7, 6, 5)
// Print the stack
println(s1)
// Applying top method
val result = s1.top
// Display output
print("Top element of the stack: " + result)
}
}
输出:
Stack(1, 3, 2, 7, 6, 5)
Top element of the stack: 1
示例 #2:
// Scala program of top()
// method
// Import Stack
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating stack
val s1 = Stack(5, 3, 2, 7, 6, 1)
// Print the stack
println(s1)
// Applying top method
val result = s1.top
// Display output
print("Top element of the stack: " + result)
}
}
输出:
Stack(5, 3, 2, 7, 6, 1)
Top element of the stack: 5