swift printer

printer.swift

// Test your 🔁 skills!
var printer :String
var current: Int = 1
var upperLimit: Int = 40
var goUp: Bool = false
for _ in 1...100 {
  printer = ""
  let change: Int = Int.random(in: 2...7)
  
  switch current {
    case 1:
      goUp = true
    case upperLimit:
      goUp = false
    default:
      goUp = Int.random(in:1...2) == 2
  }
  goUp = Int.random(in:1...5) == 2 ? !goUp : goUp
  current = goUp ? current + change : current - change
  
  switch current {
    case let x where x < 1:
      current = 1
    case let x where x > upperLimit:
      current = upperLimit
    default:
      break
  }
  for _ in 1...current {
    printer += "*"
  }
  print(printer)
}