title: Select item by a maximum value and duplicates of this value present in List<Tuple>
body: <p>Print top value and its  duplicate values present in List
  Suppose List is ordered list.</p>
  
  <pre><code>List&lt;Tuple&lt;int, string, string&gt;&gt; result = new List&lt;Tuple&lt;int, string, string&gt;&gt; {
      {4, "am", "I am the One"}
      {4, "am" , "I am human"}
      {2, "one", "zero plus one is one"}
      {1, "is", "this is list"}
  };
  </code></pre>
  
  <p>Selected output should Top int value and its duplicate if present.</p>
  
  <p>Top according to int values is : 4. Duplicates are 1st and 2nd entries of list.</p>
  
  <p>Output:</p>
  
  <pre><code>4, am, I am the One
  4, am , I am human
  </code></pre>
  
  <p>Can anyone code to get max value and its duplicate?</p>