#Usage g++ prefixTreeESpan.cpp -o prefixTreeESpan ./prefixTreeESpan your_inputFile your_miniSupport your_outputFile
#Example inputFile in /data/ directory. D10.data, F5.data, T1M.data
#Example outputFile in /output/ directory. D10.out, F5.out, T1M.data
#Reference Lei Zou, Yansheng Lu, Huaming Zhang, and Rong Hu. Prefixtreeespan: A pattern growth algorithm for mining embedded subtrees. In Proceedings of the 7th international conference on Web Information Systems, WISE¡¯06, pages 499?505, Wuhan, China, 2006. Springer-Verlag.