title: Get max value of List Point with condition
body: <p>I have a list of <strong>Points</strong>. <code>List&lt;Point&gt; points = new List&lt;Point&gt;();</code></p>
  <p>I want to get the biggest value of y coordinates inside the list, given the condition that it only scans the coordinates inside the list with a specific x coordinate.</p>
  <p><strong>For example:</strong></p>
  <p>I have points like this</p>
  <pre><code>(1,1)
  (1,2)
  (1,3)
  (1,4)
  (1,5)
  (2,1)
  (2,2)
  (2,3)
  (2,4)
  (2,5)
  </code></pre>
  <p>I want to find the biggest value of y-axis or y-coordinate, given that it only search coordinates with 2 as value of x. so the output must be <strong>(2,5)</strong></p>