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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



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