How to reverse a list in scala

Last Updated : 17 Apr, 2019

In Scala, list is defined under scala.collection.immutable package. A list is a collection of same type elements which contains immutable data. We use reverse function to reverse a list in Scala.
Below are the examples to reverse a list.

Reverse a simple list

   // Scala program to reverse a simple Immutable lists  
import scala.collection.immutable._
  
// Creating object  
object GFG  
{  
    // Main method  
    def main(args:Array[String])  
    {  
        // Creating and initializing immutable lists  
        val mylist: List[String] = List("Geeks", "For", 
                                "geeks", "is", "best")  
      
        // Display the value of mylist1  
        println("Reversed List is: " + mylist.reverse)  
      
    }  
}  
 
  

Output:

Reversed List is: List(best, is, geeks, For, Geeks)

Reverse a list using for loop

   // Scala program to print reverse immutable lists  
// using for loop 
import scala.collection.immutable._
  
// Creating object  
object GFG 
{  
    // Main method  
    def main(args:Array[String])  
    {  
        // Creating and initializing immutable lists  
        val mylist: List[String] = List("Geeks", "For", "geeks", "is", 
                                        "a", "fabulous", "portal") 
  
        // Display the value of mylist in 
        // reverse order using for loop  
        for(element<-mylist.reverse)  
        {  
            println(element)  
        }  
    }  
}  
 
  

Output:

portal  fabulous  a  is  geeks  For  Geeks

Reverse a list using foreach loop

   // Scala program to reverse a list 
// using foreach loop 
import scala.collection.immutable._
  
// Creating object  
object GFG 
{  
    // Main method  
    def main(args:Array[String])  
    {  
        // Creating and initializing immutable lists  
        val mylist = List("Geeks", "For", "geeks", "is", 
                        "a", "fabulous", "portal") 
          
        print("Original list is: ") 
          
        // Display the value of mylist using for loop  
        mylist.foreach{x:String => print(x + " ") } 
          
        // calling reverse function 
        println("\nReversed list: " + mylist.reverse) 
    }  
}  
 
  

Output:

Original list is: Geeks For geeks is a fabulous portal   Reversed list: List(portal, fabulous, a, is, geeks, For, Geeks)

How to reverse a String in Scala?

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