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Scala Queue count() method with example

  • Last Updated : 18 Oct, 2019

The count() method is utilized to count the number of elements in the queue 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 queue that satisfies a given predicate.

Example #1:




// Scala program of count() 
// method 
  
// Import Queue  
import scala.collection.mutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating a queue 
        val q1 = Queue(1, 2, 3, 4, 5
          
        // Print the queue
        println(q1)
          
        // Applying count method 
        val result = q1.count(z => true
          
        // Displays output 
        print("Number of element in queue: " + result)
    
Output:
Queue(1, 2, 3, 4, 5)
Number of element in queue: 5

Example #2:




// Scala program of count() 
// method 
  
// Import Queue  
import scala.collection.mutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating a queue 
        val q1 = Queue(1, 2, 3, 4, 5
          
        // Print the queue
        println(q1)
          
        // Applying count method 
        val result = q1.count(z => {z % 2 == 0}) 
          
        // Displays output 
        print("Number of element in queue divisible by 2: " + result)
    
Output:
Queue(1, 2, 3, 4, 5)
Number of element in queue divisible by 2: 2



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