The computational complexity is O(N^2).</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>x</code> - Interpolating points array.</dd><dd><code>y</code> - Interpolating values array.</dd>
<dt><span class="strong">Returns:</span></dt><dd>a fresh copy of the divided difference array.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html" title="class in org.apache.commons.math3.exception">D