title: Swift for loop backwards
body: <p>Is it possible to create an inverted <code>Range</code>? </p>
  
  <p>I mean one that goes from 99 to 1, instead of the other way around. My goal is to iterate the values from 99 to 1.</p>
  
  <p>This doesn't compile, but it should give you an idea of what I'm trying to do:</p>
  
  <pre><code>for i in 99...1{
      print("\(i) bottles of beer on the wall, \(i) bottles of beer.")
      print("Take one down and pass it around, \(i-1) bottles of beer on the wall.")
  }
  </code></pre>
  
  <p>Wha's the easiest way of achieving this in <code>Swift</code>?</p>