title: Determine if the number of open brackets "(" equal the close brackets ")"
body: <p>Given a string in the following format: </p>
  
  <pre><code>"(1 AND (2 OR 3) AND 4)"
  </code></pre>
  
  <p>What is the fastest way to determine if the number of "open" brackets <strong>"("</strong> equal the "close" brackets <strong>")"</strong>.</p>
  
  <p><strong>NOTE:</strong> The string could be several hundred characters longs.</p>