Scala List concatenation with example

In order to concatenate two lists we need to utilize concat() method in Scala.
Syntax:

List.concat(l1, l2)

In above syntax, l1 is list1 and l2 is list2.
Below is the example to concat two lists in scala.
Example #1:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Scala program of concat()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating two lists
        val m1 = List(1, 2, 3)
        val m2 = List(4, 5, 6)
          
        // Applying concat method
        val res = List.concat(m1, m2)
          
        // Displays output
        println(res)
      
    }
}

chevron_right


Output:



List(1, 2, 3, 4, 5, 6)

Example #2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Scala program of concat()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating two lists
        val m1 = List(1, 2, 3)
        val m2 = List(3, 4, 5)
          
        // Applying concat method
        val res = List.concat(m1, m2)
          
        // Displays output
        println(res)
      
    }
}

chevron_right


Output:

List(1, 2, 3, 3, 4, 5)

Here, the identical elements are not removed.



My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.