Scala Stack count() method with example

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

// 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

// 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 Stack count() method with example

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