Scala Stack take() 方法与示例

在 Scala Stack class中， take()方法用于返回由堆栈的前“n”个元素组成的堆栈。

Method Definition: def take(n: Int): Stack[A]

Return Type: It returns a stack consisting of the first ‘n’ elements of the stack.

示例 #1：

// Scala program of take() 
// method 
  
// Import Stack 
import scala.collection.mutable._
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating stack
        val s1 = Stack(1, 2, 3, 4) 
          
        // Print the stack 
        println(s1) 
           
        // Applying take method  
        val result = s1.take(2)
          
        // Display output 
        print("Stack containing first two elements: " + result) 
         
    } 
} 

输出：

Stack(1, 2, 3, 4)
Stack containing first two elements: Stack(1, 2)

示例 #2：

// Scala program of take() 
// method 
  
// Import Stack 
import scala.collection.mutable._
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating stack
        val s1 = Stack(1, 2, 3, 4) 
          
        // Print the stack 
        println(s1) 
           
        // Applying take method  
        val result = s1.take(3)
          
        // Display output 
        print("Stack containing first three elements: " + result) 
         
    } 
} 

输出：

Stack(1, 2, 3, 4)
Stack containing first three elements: Stack(1, 2, 3)