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Scala Stack contains() method with example

  • Last Updated : 03 Nov, 2019

In Scala Stack class, the contains() method is utilized to check if an element is present in the stack of not.

Method Definition: def contains(elem: A): Boolean

Return Type: It returns true if the element is present in the stack or else it returns false.

Example #1:




// Scala program of contains() 
// 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 contains method    
        val result = s1.contains(10)
          
        // Display output
        println("Stack contains element 10: " + result) 
  
    
Output:
Stack(1, 2, 3, 4, 5)
Stack contains element 10: false

Example #2:




// Scala program of contains() 
// 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 contains method    
        val result = s1.contains("Scala")
          
        // Display output
        println("Stack contains element Scala: " + result) 
  
    
Output:
Stack(C++, Java, Python, Scala)
Stack contains element Scala: true



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