Scala List mkString() method with a separator with example

The mkString() method is utilized to display all the elements of the list in a string along with a separator.

Method Definition: def mkString(sep: String): String

Return Type: It returns all the elements of the list in a string along with a separator.

Example #1:

// Scala program of mkString()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {
        // Creating a list
        val m1 = List(2, 3, 5, 7, 8)

        // Applying mkString method
        val result = m1.mkString("*")

        // Displays output
        println(result)

    }
}

Output:

2*3*5*7*8

Example: 2#

// Scala program of mkString()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {
        // Creating a list
        val m1 = List(2, 3, 5, 7, 5)

        // Applying mkString method
        val result = m1.mkString("_")

        // Displays output
        println(result)

    }
}

Output:

2_3_5_7_5