- Scala Collections Tutorial
- Scala Collections - Home
- Scala Collections - Overview
- Scala Collections - Environment Setup
- Scala Collections - Arrays
- Scala Collections - Array
- Scala Collections - Multi-Dimensional Array
- Scala Collections - Array using Range
- Scala Collections - ArrayBuffer
- Scala Collections - Lists
- Scala Collections - List
- Scala Collections - ListBuffer
- Scala Collections - ListSet
- Scala Collections - Vector
- Scala Collections - Sets
- Scala Collections - Set
- Scala Collections - BitSet
- Scala Collections - HashSet
- Scala Collections - TreeSet
- Scala Collections - Maps
- Scala Collections - Map
- Scala Collections - HashMap
- Scala Collections - ListMap
- Scala Collections - Miscellaneous
- Scala Collections - Iterator
- Scala Collections - Option
- Scala Collections - Queue
- Scala Collections - Tuple
- Scala Collections - Seq
- Scala Collections - Stack
- Scala Collections - Stream
- Scala Collections Combinator methods
- Scala Collections - drop
- Scala Collections - dropWhile
- Scala Collections - filter
- Scala Collections - find
- Scala Collections - flatMap
- Scala Collections - flatten
- Scala Collections - fold
- Scala Collections - foldLeft
- Scala Collections - foldRight
- Scala Collections - map
- Scala Collections - partition
- Scala Collections - reduce
- Scala Collections - scan
- Scala Collections - zip
- Scala Collections Useful Resources
- Scala Collections - Quick Guide
- Scala Collections - Useful Resources
- Scala Collections - Discussion
Scala Collections - BitSet
Bitset is a common base class for mutable and immutable bitsets. Bitsets are sets of non-negative integers and are represented as variable-size arrays of bits packed into 64-bit words. The memory footprint of a bitset is represented by the largest number stored in it.
Declaring BitSet Variables
The following is the syntax for declaring an BitSet variable.
Syntax
var z : BitSet = BitSet(0,1,2)
Here, z is declared as an bit-set of non-negative integers which has three members. Values can be added by using commands like the following −
Command
var myList1: BitSet = myList + 3;
Processing BitSet
Below is an example program of showing how to create, initialize and process BitSet −
Example
import scala.collection.immutable.BitSet
object Demo {
def main(args: Array[String]) = {
var mySet: BitSet = BitSet(0, 1, 2);
// Add an element
var mySet1: BitSet = mySet + 3;
// Remove an element
var mySet2: BitSet = mySet - 2;
var mySet3: BitSet = BitSet(4, 5);
// Adding sets
var mySet4: BitSet = mySet1 ++ mySet3;
println(mySet);
println(mySet1);
println(mySet2);
println(mySet4);
}
}
Save the above program in Demo.scala. The following commands are used to compile and execute this program.
Command
\>scalac Demo.scala \>scala Demo
Output
BitSet(0, 1, 2) BitSet(0, 1, 2, 3) BitSet(0, 1) BitSet(0, 1, 2, 3, 4, 5)
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