def operacjaTablicowa(tab:Array[Int],op:String,value:Int):Array[Int] =
  op match {
  case "sum" =>  {
    val temp = new Array[Int](1)
    var sum = 0;
    for ( i <- 0 to (tab.length - 1)) {
         sum = (sum + tab(i));
      }
    temp(0) = sum
    return temp
  }
  case "add" => {
    val temp = new Array[Int](tab.length+1)
    for(i <- 0 to (tab.length -1)){
      temp(i) = tab(i)
    }
    temp(temp.length-1) = value
    return temp
  }
  case "remove" =>{
    val temp = new Array[Int](tab.length-1)
    var index = 0;
    for(i <- 0 to (tab.length-1)){
      if(i != value){
        temp(index) = tab(i)
        index = index + 1
      }
    }
    return temp
  }
}