title: Java Stream Reduce of array of objects
body: <p>I have a list of array of 2 objects:</p>
  
  <pre><code>List&lt;Object[2]&gt;
  </code></pre>
  
  <p>Where object[0] is an Integer and object[1] is a String.</p>
  
  <p>How can I stream the list and apply different functions on each object?
  So that, the result will be an array having:</p>
  
  <pre><code>result[0] = multiplication of all object[0]
  result[1] = concatenation of all object[1]
  </code></pre>