Scala Stack contains() method with example

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