seeA C# sets class
http://www.codeproject.com/csharp/set.aspYet Another C# set class
http://www.codeproject.com/csharp/yaset.asp
http://www.codeproject.com/csharp/set.aspYet Another C# set class
http://www.codeproject.com/csharp/yaset.asp
调试欢乐多
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