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2013年教育技术与管理科学国际会议

作者： Qing Li Weiwei Chen Yanqin Tang College of Command Information System PLA Univ. of Sci. & Tech.

"algorithms and data structures" is an important professional basic course to computer and electronic information professional courses. The article around teaching reform of "algorithms and data structures" course, comprehensive introduction to the reform contents and achievements of the " algorithms and data structures " course in teaching contents, implementation plan, curriculum design, network teaching, practice teaching, etc.

关键词： algorithms and data structures teaching reform curriculum design network course

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New method in information processing for maintaining an efficient dynamic ordered set

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Science in China(Series F) 2009年第8期52卷 1292-1301页

作者： XIN ShiQing WANG GuoJin Institute of Computer Graphics and Image Processing Zhejiang University Hangzhou 310027 China State Key Laboratory of CAD & CG Zhejiang University Hangzhou 310027 China

This paper investigates how to maintain an efficient dynamic ordered set of bit strings, which is an important problem in the field of information search and information processing. Generally, a dynamic ordered set is required to support 5 essential operations including search, insertion, deletion, max-value retrieval and next-larger-value retrieval. Based on previous research fruits, we present an advanced data structure named rich binary tree （RBT）, which follows both the binary-search-tree property and the digital-search-tree property. Also, every key K keeps the most significant difference bit （MSDB） between itself and the next larger value among K＇s ancestors, as well as that between itself and the next smaller one among its ancestors. With the new data structure, we can maintain a dynamic ordered set in O（L） time. Since computers represent objects in binary mode, our method has a big potential in application. In fact, RBT can be viewed as a general-purpose data structure for problems concerning order, such as search, sorting and maintaining a priority queue. For example, when RBT is applied in sorting, we get a linear-time algorithm with regard to the key number and its performance is far better than quick-sort. What is more powerful than quick-sort is that RBT supports constant-time dynamic insertion/deletion.

关键词： information processing dynamic ordered set algorithms and data structures rich binary tree

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