Scala Queue foreach() method with example

The foreach() method is utilized to apply a given function to all the elements of the queue.

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

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

Example #1:

// Scala program of foreach()
// method

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

// Creating object
object GfG
{

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

        // Creating queues
        val q1 = Queue(1, 3, 2, 7, 6, 5)

        // Applying foreach method to print the queue
        print("Elements in the queue: ")
        q1.foreach(x => print(x + " "))

    }
}

Output:

Elements in the queue: 1 3 2 7 6 5

Example #2:

// Scala program of foreach()
// method

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

// Creating object
object GfG
{

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

        // Creating queues
        val q1 = Queue(1, 3, 2, 7, 6, 5)

        // Print the queue
        println(q1)

        // Applying foreach method
        q1.foreach(x => println(x + " times " + x +" = " + x*x))

    }
}

Output:

Queue(1, 3, 2, 7, 6, 5)
1 times 1 = 1
3 times 3 = 9
2 times 2 = 4
7 times 7 = 49
6 times 6 = 36
5 times 5 = 25