Scala TreeSet dropWhile() method with example

In Scala TreeSet class, the dropWhile() method is utilized to drop the longest prefix from the front which satisfies a given predicate in a TreeSet.

Method Definition: def dropWhile(p: (A) => Boolean): TreeSet[A]

Return Type: It returns a new TreeSet that consists of elements after dropping the longest prefix satisfying the given predicate.

Example #1:

// Scala program of dropWhile()
// method

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

// Creating object
object GfG
{

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

        // Creating TreeSet
        val t1 = TreeSet(2, 4, 6, 7, 8, 9)

        // Print the TreeSet
        println(t1)

        // Applying dropWhile() method
        val result = t1.dropWhile(x => {x % 2 == 0})

        // Displays output
        println("TreeSet after using dropWhile() method: " + result)

    }
}

Output:

TreeSet(2, 4, 6, 7, 8, 9)
TreeSet after using dropWhile() method: TreeSet(7, 8, 9)

Example #2:

// Scala program of dropWhile()
// method

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

// Creating object
object GfG
{

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

        // Creating TreeSet
        val t1 = TreeSet(3, 5, 6, 7, 8, 9)

        // Print the TreeSet
        println(t1)

        // Applying dropWhile() method
        val result = t1.dropWhile(x => {x % 2 != 0})

        // Displays output
        println("TreeSet after using dropWhile() method: " + result)

    }
}

Output:

TreeSet(3, 5, 6, 7, 8, 9)
TreeSet after using dropWhile() method: TreeSet(6, 7, 8, 9)