Question

How to remove the last element from an ArrayBuffer in Scala

Answer 1

import scala.collection.mutable.ArrayBuffer

object Main {
  def main(args: Array[String]): Unit = {
      val arr = ArrayBuffer("Scala", "C#", "Java", "C", "C++")
    
      arr.remove(arr.size - 1)
    
      println(arr.mkString(", "))
  }
}
    
    
    
/*
run:
    
Scala, C#, Java, C
    
*/

 

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Answer 2

import scala.collection.mutable.ArrayBuffer

object Main extends App {
    val arr = ArrayBuffer("Scala", "C#", "Java", "C", "C++")
  
    arr.remove(arr.length - 1)
  
    println(arr.mkString(", "))
}
   
    
    
    
/*
run:
    
Scala, C#, Java, C
    
*/

 

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