Scala Queue filter() method with example

The filter() method is utilized to return a new queue that consists of all the elements that satisfy a given predicate.

Method Definition: def filter(pred: (A) => Boolean): Queue[A]

Return Type: It returns a new queue that consists of all the elements that satisfy a given predicate.

Example #1:

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// Scala program of filter() 
// method 
  
// Import Queue  
import scala.collection.mutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating queues 
        val q1 = Queue(1, 3, 2, 7, 6, 5
          
        // Print the queue
        println(q1)
          
        // Applying filter method 
        val result = q1.filter(x => {x % 2 == 1}) 
          
        // Displays output 
        print("Odd elements: " + result)
    

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Output:

Queue(1, 3, 2, 7, 6, 5)
Odd elements: Queue(1, 3, 7, 5)

Example #2:

filter_none

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// Scala program of filter() 
// method 
  
// Import Queue  
import scala.collection.mutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating queues 
        val q1 = Queue(1, 3, 2, 7, 6, 5
          
        // Print the queue
        println(q1)
          
        // Applying filter method 
        val result = q1.filter(x => {x % 3 == 0}) 
          
        // Displays output 
        print("Elements divisible by 3: " + result)
    

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Output:

Queue(1, 3, 2, 7, 6, 5)
Elements divisible by 3: Queue(3, 6)



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