Scala immutable TreeSet head() method
In Scala immutable TreeSet class head() method is utilized to return the first element of the TreeSet.
Method Definition: def head: A
Return Type: It returns the first element of the TreeSet.
Example #1:
// Scala program of head() // method // Import TreeSet import scala.collection.immutable. _ // Creating object object GfG { // Main method def main(args : Array[String]) { // Creating TreeSet val t 1 = TreeSet( 1 , 3 , 2 , 7 , 6 , 5 ) // Print the TreeSet println(t 1 ) // Applying head() method val result = t 1 .head // Displays output println( "First element of the TreeSet: " + result) } } |
Output:
TreeSet(1, 2, 3, 5, 6, 7) First element of the TreeSet: 1
Example #2:
// Scala program of head() // method // Import TreeSet import scala.collection.immutable. _ // Creating object object GfG { // Main method def main(args : Array[String]) { // Creating TreeSet val t 1 = TreeSet( "a" , "e" , "i" , "o" , "u" ) // Print the TreeSet println(t 1 ) // Applying head() method val result = t 1 .head // Displays output println( "First element of the TreeSet: " + result) } } |
Output:
TreeSet(a, e, i, o, u) First element of the TreeSet: a
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