Scala Stack foreach() method with example

In Scala Stack class, the foreach() method is utilized to apply a given function to all the elements of the stack.

Method Definition: def foreach[U](f: (A) => U): Unit

Return Type: It returns all the elements of the stack after applying the given function to each of them.

Example #1:

// Scala program of foreach()
// method

// Import Stack
import scala.collection.mutable._

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating stack
        val s1 = Stack(6, 2, 3, 4, 5)

        // Applying foreach method to print the stack
        print("Elements in the stack: ")
        s1.foreach(x => print(x + " "))
    }
}

Output:

Elements in the stack: 6 2 3 4 5

Example #2:

// Scala program of foreach()
// method

// Import Stack
import scala.collection.mutable._

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating stack
        val s1 = Stack(6, 2, 3, 4, 5)

        // Print the stack
        println(s1)

        // Applying foreach method
        s1.foreach(x => println(x + " times " + x +" = " + x*x))
    }
}

Output:

Stack(6, 2, 3, 4, 5)
6 times 6 = 36
2 times 2 = 4
3 times 3 = 9
4 times 4 = 16
5 times 5 = 25