title: How to find what range a number is in
body: <p>I have folders named like this:</p>
  
  <pre><code>"1-500"
  "501-1000"
  "1001-1500"
  "1501-2000"
  "2501-3000"
  etc....
  </code></pre>
  
  <p>Given an Id such as <code>1777</code> how can I find the name of the folder it belongs in?</p>
  
  <p>I am using Java, but your answer can be pseudocode.</p>
  
  <p>Thanks!</p>