Enlarge matrix repeating its values
<p>I need to enlarge a matrix <code>A</code> to a matrix <code>B</code> with size <code>n</code> times the size of <code>A</code>. The values must be repeated, eg:</p>

<p><code>A</code> size 2x3, <code>n</code> = 3, leads to <code>B</code> size 6x9:</p>

<p>Sample values:  </p>

<pre><code>A =  
1 2 3  
4 5 6  
</code></pre>

<p>Results with:</p>

<pre><code>B =  
1 1 1 2 2 2 3 3 3    
1 1 1 2 2 2 3 3 3  
1 1 1 2 2 2 3 3 3  
4 4 4 5 5 5 6 6 6  
4 4 4 5 5 5 6 6 6   
4 4 4 5 5 5 6 6 6  
</code></pre>

<p>What is the fastest way to achieve that in Matlab?</p>