title: Multi-dimensional array transposing
body: <p>I have a row-based multidimensional array:</p>
  
  <pre><code>/** [row][column]. */
  public int[][] tiles;
  </code></pre>
  
  <p>I would like to transform this array to column-based array, like following:</p>
  
  <pre><code>/** [column][row]. */
  public int[][] tiles;
  </code></pre>
  
  <p>...But I really don't know where to start</p>