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Scala Stack map() method with example
  • Last Updated : 03 Nov, 2019

In Scala Stack class, the map() method is utilized to build a new stack by applying a function to all elements of the given stack.

Method Definition: def map[B](f: (A) => B): Stack[B]

Return Type: It returns a new stack containing all the elements after applying the given function.

Example #1:




// Scala program of map() 
// 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 map method  
        val result = s1.map(x => x*x)
          
        // Display output 
        print("New stack after squaring all elements: " + result) 
         
    
Output:
Stack(5, 3, 2, 7, 6, 1)
New stack after squaring all elements: Stack(25, 9, 4, 49, 36, 1)

Example #2:




// Scala program of map() 
// 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 map method  
        val result = s1.map(x => x/2)
          
        // Display output 
        print("New queue after dividing all elements by 2: " + result) 
         
    
Output:
Stack(1, 3, 2, 7, 6, 5)
New queue after dividing all elements by 2: Stack(0, 1, 1, 3, 3, 2)



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