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Scala immutable TreeSet count() method

  • Last Updated : 19 Apr, 2020

In Scala immutable 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 program of count() 
// method 
  
// Import TreeSet
import scala.collection.immutable._
  
// 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 program of count() 
// method 
  
// Import TreeSet
import scala.collection.immutable._
  
// 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



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