Scala TreeSet count() method with example

Scala Stack count() method with example

Last Updated : 03 Nov, 2019

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

Example #1:

// Scala program of count()  
// method  
  
// Import Stack  
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating a stack  
        val s1 = Stack(1, 2, 3, 4, 5)  
          
        // Print the stack  
        println(s1)  
          
        // Applying count method  
        val result = s1.count(z => true)  
          
        // Displays output  
        print("Number of element in stack: " + result)  
    }  
}  

Output:

Stack(1, 2, 3, 4, 5)
Number of element in stack: 5

Example #2:

// Scala program of count()  
// method  
  
// Import Stack  
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating a stack  
        val s1 = Stack(1, 2, 3, 4, 5)  
          
        // Print the stack  
        println(s1)  
          
        // Applying count method  
        val result = s1.count(z => {z % 2 == 0})  
          
        // Displays output  
        print("Number of element in stack divisible by 2: " + result)  
    }  
}  

Output:

Stack(1, 2, 3, 4, 5)
Number of element in stack divisible by 2: 2

Scala TreeSet count() method with example

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