Scala TreeSet max() method with example

Scala TreeSet head() method with example

Last Updated : 02 Nov, 2019

The head() method is utilized to return the first element of the TreeSet.

Method Definition: def head: A Return Type: It returns the first element of the TreeSet.

Example #1:

Scala

// Scala program of head() 
// method 

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

// 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 head() method  
        val result = t1.head
        
        // Displays output 
        println("First element of the TreeSet: " + result)
        
    } 
}

Output:

TreeSet(1, 2, 3, 5, 6, 7)
First element of the TreeSet: 1

Example #2:

Scala

// Scala program of head() 
// method 

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

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating TreeSet
        val t1 = TreeSet("a", "e", "i", "o", "u") 
        
        // Print the TreeSet
        println(t1)
       
        // Applying head() method  
        val result = t1.head
        
        // Displays output 
        println("First element of the TreeSet: " + result)
        
    } 
}

Output:

TreeSet(a, e, i, o, u)
First element of the TreeSet: a

Scala TreeSet max() method with example

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