Hello - <div><br></div><div>I&#39;ve got a problem I&#39;m not sure how to best approach.</div><div><br></div><div>I&#39;ve got triplets of names -- class.operation.specifier -- that I need to match against much longer sequences of names. (Which are in attributes in an XML hierarchy; each sequence of names derives from a path to a leaf element.)</div><div><br></div><div>If there is a match (as there usually is not) one of the names in the sequence of names will match to the class, a subsequent name to the operation,  and a name subsequent to that match to the specifier. (All simple string values.)</div><div><br></div><div>The naive n^2 version is much too slow for the amount of data involved.</div><div><br></div><div>Is there an efficient way to do this kind of matching? </div><div><br></div><div>Thanks!</div><div>Graydon</div>