Scala TreeSet -() method with example

Scala TreeSet ++() method with example

Last Updated : 03 Nov, 2019

In Scala TreeSet class, the ++() method is utilized to add elements of one TreeSet to another TreeSet.

Method Definition: def ++(that: IterableOnce[A]): TreeSet[A] Return Type: It returns a new TreeSet which contains all the element from both the given TreeSets.

Example #1:

Scala

// Scala program of ++() 
// method 

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

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating TreeSets
        val t1 = TreeSet("g", "e", "e", "k", "s") 
        
        val t2 = TreeSet("a", "e", "i", "o", "u")
        
        // Print the TreeSets
        println(t1) 
        
        println(t2)
        
        // Applying ++() method  
        val result = t1 ++ t2
        
        // Display output 
        print("Combined TreeSet: " + result) 
         
    } 
}

Output:

TreeSet(e, g, k, s)
TreeSet(a, e, i, o, u)
Combined TreeSet: TreeSet(a, e, g, i, k, o, s, u)

Example #2:

Scala

// Scala program of ++() 
// method 

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

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating TreeSets
        val t1 = TreeSet(1, 6, 3, 2, 5) 
        
        val t2 = TreeSet(2, 1, 5, 4, 1)
        
        // Print the TreeSets
        println(t1) 
        
        println(t2)
        
        // Applying ++() method  
        val result = t1 ++ t2
        
        // Display output 
        print("Combined TreeSet: " + result) 
         
    } 
}

Output:

TreeSet(1, 2, 3, 5, 6)
TreeSet(1, 2, 4, 5)
Combined TreeSet: TreeSet(1, 2, 3, 4, 5, 6)

Scala TreeSet -() method with example

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