Scala Stack pushAll()方法及示例

在Scala的Stack类中， pushAll() 方法被用于将集合中的元素添加到栈中。

方法定义：def pushAll(elems: IterableOnce[A]): Stack.this.type

返回类型：返回包含给定集合中所有元素的栈。

示例1:

// Scala program of pushAll() 
// method 
  
import scala.collection.mutable.Stack 
  
// Creating object 
object GfG 
{ 
      
    // Main method 
    def main(args:Array[String]) 
    { 
        // Creating a stack
        var s1 = Stack[String]()
          
        // Creating a set
        var s2 = Set("C++", "Java", "Python", "Scala") 
          
        // Print the set
        println(s2)
      
        // Applying pushAll method    
        s1.pushAll(s2)
          
        // Print the stack
        println(s1) 
  
    } 
} 

Set(C++, Java, Python, Scala)
Stack(Scala, Python, Java, C++)

示例2:

// Scala program of pushAll() 
// method 
  
import scala.collection.mutable.Stack 
  
// Creating object 
object GfG 
{ 
      
    // Main method 
    def main(args:Array[String]) 
    { 
        // Creating a stack
        var s1 = Stack[String]()
          
        // Creating another stack
        var s2 = Stack("C++", "Java", "Python", "Scala") 
          
        // Print the stack
        println(s2)
      
        // Applying pushAll method    
        s1.pushAll(s2)
          
        // Print the stack
        println(s1) 
  
    } 
} 

Stack(C++, Java, Python, Scala)
Stack(Scala, Python, Java, C++)

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