Scala TreeSet +() method with example

Scala TreeSet count() method with example

Last Updated : 03 Nov, 2019

In Scala TreeSet class, the count() method is utilized to count the number of elements in the TreeSet that satisfies a given predicate.

Method Definition: def count(p: (A) => Boolean): Int Return Type: It returns the count the number of elements in the TreeSet that satisfies a given predicate.

Example #1:

Scala

// Scala program of count() 
// method 

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

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating TreeSet
        val t1 = TreeSet(2, 1, 3, 4, 5) 
        
        // Print the TreeSet
        println(t1) 
        
        // Applying count() method  
        val result = t1.count(x => {x % 2 == 0})
        
        // Display output 
        print("Number of even element in the TreeSet: " + result) 
         
    } 
}

Output:

TreeSet(1, 2, 3, 4, 5)
Number of even element in the TreeSet: 2

Example #2:

Scala

// Scala program of count() 
// method 

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

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating TreeSet
        val t1 = TreeSet(2, 1, 3, 4, 5) 
        
        // Print the TreeSet
        println(t1) 
        
        // Applying count() method  
        val result = t1.count(x => {x % 2 != 0})
        
        // Display output 
        print("Number of odd element in the TreeSet: " + result) 
         
    } 
}

Output:

TreeSet(1, 2, 3, 4, 5)
Number of odd element in the TreeSet: 3

Scala TreeSet +() method with example

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