Scala Queue ++() method with example

Scala Queue reverse() method with example

Last Updated : 29 Oct, 2019

The reverse() method is utilized to return a queue with the reverse order.

Method Definition: def reverse: Queue[A]

Return Type: It returns a queue with the reverse order.

Example #1:

// Scala program of reverse()  
// method  
  
// Import Queue   
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating a queue  
        val q1 = Queue(1, 2, 3, 4, 5)  
          
        // Print the queue 
        println(q1) 
          
        // Applying reverse method  
        val result = q1.reverse 
          
        // Display output 
        print("Reversed queue: " + result) 
          
    }  
}  

Output:

Queue(1, 2, 3, 4, 5)
Reversed queue: Queue(5, 4, 3, 2, 1)

Example #2:

// Scala program of reverse()  
// method  
  
// Import Queue   
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating a queue  
        val q1 = Queue(5, 2, 13, 7, 1, 3)  
          
        // Print the queue 
        println(q1) 
          
        // Applying reverse method  
        val result = q1.reverse 
          
        // Display output 
        print("Reversed queue: " + result) 
          
    }  
}  

Output:

Queue(5, 2, 13, 7, 1, 3)
Reversed queue: Queue(3, 1, 7, 13, 2, 5)

Scala Queue ++() method with example

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