Home » Scala programs

BitSet count() Method in Scala with Example

Here, we will learn about count() method defined on BitSet in Scala. It is used to count the number of elements in the BitSet. We will learn about count method in Scala with syntax and examples.
Submitted by Shivang Yadav, on December 08, 2020

BitSet in Scala is a special collection of positive integers. Scala programming language has a huge library containing a lot of utility functions to help working with data structure easy.

BitSet count() method

BitSet count() method is used to count the total number of elements present in the BitSet.

Syntax:

bitSet_Name.count(x:true)

Parameters:

It accepts a single parameter.

Return Type:

It returns an integer value which is the count of elements in the array.

Let's see some examples to understand the working of the method.

Program 1: Program to illustrate the working of count() method

// Program to illustrate the working of count() method

import scala.collection.immutable.BitSet

object MyObject {
    def main(args: Array[String]) {
        val myBitSet = BitSet(4, 1, 6, 2, 9)
        println("myBitSet : " + myBitSet)
    
        val eleCount = myBitSet.count(x => true)
        println("The count of elements in BitSet is " + eleCount)
    }
}

Output:

myBitSet : BitSet(1, 2, 4, 6, 9)
The count of elements in BitSet is 5

Explanation: In the above code, we have created a BitSet named myBitSet with some elements and printed it. Then we have used the count method to count the number of elements in BitSet and printed it.

Program 2: Program to illustrate the working of count() method

// Program to illustrate the working of count() method

import scala.collection.immutable.BitSet

object MyObject {
    def main(args: Array[String]) {
        val myBitSet = BitSet()
        println("myBitSet : " + myBitSet)
        
        val eleCount = myBitSet.count(x => true)
        println("The count of elements in BitSet is " + eleCount)
    }
}

Output:

myBitSet : BitSet()
The count of elements in BitSet is 0

Explanation: In the above code, we have created a BitSet named myBitSet with 0 elements. Then we have used the count() method to find the number of elements in the BitSet and printed the value.

Program 3: Program to illustrate the working of the count() method

// Program to illustrate the working of count() method

import scala.collection.immutable.BitSet

object MyObject {
    def main(args: Array[String]) {
        val myBitSet = BitSet(4, 1, 6, 2, 9)
        println("myBitSet : " + myBitSet)
        
        val eleCount = myBitSet.count(x => false)
        println("The count of elements in BitSet is  " + eleCount)
    }
}

Output:

myBitSet : BitSet(1, 2, 4, 6, 9)
The count of elements in BitSet is  0