Convert Array to Matrix
<p>I have an array of the length <code>m*n</code>, that stores a list of <code>double</code> element. </p>

<p>How to convert it into a matrix of <code>m*n</code>?</p>

<p>This is the method signature.</p>

<pre><code>//returns a matrix of [m,n], given arr is of length m*n
static double[,] ConvertMatrix(Array arr, int m, int n)
{
}
</code></pre>
