Scala Queue count() method with example
The count() method is utilized to count the number of elements in the queue 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 queue that satisfies a given predicate.
Example #1:
// Scala program of count() // method // Import Queue import scala.collection.mutable._ // Creating object object GfG { // Main method def main(args:Array[String]) { // Creating a queue val q1 = Queue(1, 2, 3, 4, 5) // Print the queue println(q1) // Applying count method val result = q1.count(z => true) // Displays output print("Number of element in queue: " + result) } } |
Output:
Queue(1, 2, 3, 4, 5) Number of element in queue: 5
Example #2:
// Scala program of count() // method // Import Queue import scala.collection.mutable._ // Creating object object GfG { // Main method def main(args:Array[String]) { // Creating a queue val q1 = Queue(1, 2, 3, 4, 5) // Print the queue println(q1) // Applying count method val result = q1.count(z => {z % 2 == 0}) // Displays output print("Number of element in queue divisible by 2: " + result) } } |
Output:
Queue(1, 2, 3, 4, 5) Number of element in queue divisible by 2: 2
