In Scala immutable TreeSet class
, the +() method is utilised to add an element to the TreeSet unless it is already present.
Method Definition: def +(elem: A): TreeSet[A]
Return Type: It returns a new TreeSet with an additional element unless the element is already present.
Example #1:
// Scala program of +() // method // Import TreeSet import scala.collection.immutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating TreeSets
val t 1 = TreeSet( "a" , "e" , "i" , "o" )
// Print the TreeSets
println(t 1 )
// Applying +() method
val result = t 1 + ( "u" )
// Display output
print( "After adding an element: " + result)
}
} |
Output:
TreeSet(a, e, i, o) After adding an element: TreeSet(a, e, i, o, u)
Example #2:
// Scala program of +() // method // Import TreeSet import scala.collection.immutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating TreeSets
val t 1 = TreeSet( 2 , 1 , 5 , 4 , 1 )
// Print the TreeSets
println(t 1 )
// Applying +() method
val result = t 1 + ( 3 )
// Display output
print( "After adding an element: " + result)
}
} |
Output:
TreeSet(1, 2, 4, 5) After adding an element: TreeSet(1, 2, 3, 4, 5)
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