Scala immutable TreeSet init() method

In Scala immutable TreeSet class, the init() method is utilized to return a new TreeSet that consists of all the elements except the last one.

Method Definition: def init: TreeSet[A]

Return Type: It returns a new TreeSet that consists of all the elements except the last one.

Example #1:

// Scala program of init()
// method

// Import TreeSet
import scala.collection.immutable._

// Creating object
object GfG
{

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

        // Creating TreeSet
        val t1 = TreeSet(1, 3, 2, 7, 6, 5)

        // Print the TreeSet
        println(t1)

        // Applying init() method
        val result = t1.init

        // Displays output
        println("Elements of the TreeSet except the last one: " + result)

    }
}

Output:

TreeSet(1, 2, 3, 5, 6, 7)
Elements of the TreeSet except the last one: TreeSet(1, 2, 3, 5, 6)

Example #2:

// Scala program of init()
// method

// Import TreeSet
import scala.collection.immutable._

// Creating object
object GfG
{

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

        // Creating TreeSet
        val t1 = TreeSet(1, 3, 12, 7, 16, 5)

        // Print the TreeSet
        println(t1)

        // Applying init() method
        val result = t1.init

        // Displays output
        println("Elements of the TreeSet except the last one: " + result)

    }
}

Output:

TreeSet(1, 3, 5, 7, 12, 16)
Elements of the TreeSet except the last one: TreeSet(1, 3, 5, 7, 12)