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 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 s 1 = Stack( 1 , 2 , 3 , 4 , 5 ) // Print the stack println(s 1 ) // Applying count method val result = s 1 .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 s 1 = Stack( 1 , 2 , 3 , 4 , 5 ) // Print the stack println(s 1 ) // Applying count method val result = s 1 .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