Scala로 Hello World n번 출력

1

def f(n: Int) = print("Hello World\n" * n)

2
non-functional 1

def f(n: Int) = {
  for (i <- 1 to n)
    println("Hello World")
}

3
non-functional 2

def f(n: Int) = {
  for(i <- Iterator.range(0,n))
    println("Hello World");
}

4
recursive

def f(n:Int):Unit = if(n>0) {
  println("Hello World")
  f(n-1)
}