Scala Stack exists() method with example

Scala Stack filter() method with example

Last Updated : 03 Nov, 2019

In Scala Stack class, the filter() method is utilized to return a new stack that consists of all the elements that satisfy a given predicate.

Method Definition: def filter(pred: (A) => Boolean): Stack[A] Return Type: It returns a new stack that consists of all the elements that satisfy a given predicate.

Example #1:

Scala

// Scala program of filter() 
// method 

// Import Stack 
import scala.collection.mutable._

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating stack  
        val s1 = Stack(1, 3, 2, 7, 6, 5)  
        
        // Print the stack
        println(s1)
          
        // Applying filter method  
        val result = s1.filter(x => {x % 2 == 1}) 
        
        // Display output
        println("Odd elements: " + result)
    } 
}

Output:

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

Example #2:

Scala

// Scala program of filter() 
// method 

// Import Stack 
import scala.collection.mutable._

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating stack  
        val s1 = Stack(1, 3, 2, 7, 6, 5)  
        
        // Print the stack
        println(s1)
          
        // Applying filter method  
        val result = s1.filter(x => {x % 3 == 0}) 
        
        // Display output
        println("Elements divisible by 3: " + result)
    } 
}

Output:

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

Scala Stack exists() method with example

rupesh_rao

Improve

Article Tags :

Similar Reads

Scala Set filter() method with example

The filter() method is utilized to select all elements of the set which satisfies a stated predicate. Method Definition: def filter(p: (A) => Boolean): Set[A] Return Type: It returns a set containing all the elements of the set which satisfies the given predicate. Example #1: Scala // Scala progr

Scala Stack find() method with example

In Scala Stack class, the find() method is utilized to return an element that satisfies a given predicate in the stack. Method Definition: def find(p: (A) => Boolean): Option[A] Return Type: It returns the first element that satisfies a given predicate if present or else it returns None. Example

Scala SortedMap filter() method with example

The filter() method is utilized to select all elements of the SortedMap which satisfies a stated predicate. Method Definition: def filter(p: ((A, B))=> Boolean): SortedMap[A, B] Return Type: It returns a new SortedMap consisting all the elements of the SortedMap which satisfies the given predicat

Scala TreeSet filter() method with example

In Scala TreeSet class, the filter() method is utilized to return a new TreeSet that consists of all the elements that satisfy a given predicate. Method Definition: def filter(pred: (A) => Boolean): TreeSet[A] Return Type: It returns a new TreeSet that consists of all the elements that satisfy a

Scala Stack exists() method with example

In Scala Stack class, the exists() method is utilized to check whether a predicate holds for any of the elements of the stack. Method Definition: def exists(p: (A) => Boolean): Boolean Return Type: It returns true if the predicate holds true for any of the elements of the stack or else returns fa

Scala SortedSet filter() method with example

The filter() method is utilized to select all elements of the SortedSet which satisfies a stated predicate. Method Definition: def filter(p: (A) => Boolean): SortedSet[A] Return Type: It returns a TreeSet containing all the elements of the SortedSet which satisfies the given predicate. Example #1

Scala List take() method with example

The take() method belongs to the value member of the class List. It is utilized to take the first n elements from the list. Method Definition: deftake(n: Int): List[A] Where, n is the number of elements to be taken from the list. Return Type:It returns a list containing only the first n elements fro

Scala Stack map() method with example

In Scala Stack class, the map() method is utilized to build a new stack by applying a function to all elements of the given stack. Method Definition: def map[B](f: (A) => B): Stack[B] Return Type: It returns a new stack containing all the elements after applying the given function. Example #1: Sc

Scala Iterator take() method with example

The take() method belongs to the concrete value member of the class Abstract Iterator. It is utilized to select the first n elements of the stated iterator. Method Definition: def take(n: Int): Iterator[A] Where, n is the number of element to take from the given iterator. Return Type: It returns the

Scala Map filter() method with example

The filter() method is utilized to select all elements of the map which satisfies a stated predicate. Method Definition: def filter(p: ((A, B))=> Boolean): Map[A, B] Return Type: It returns a new map consisting all the elements of the map which satisfies the given predicate. Example #1: Scala //