如何定义这样一个“树”数据结构？ University Faculty of Faculty of Faculty of Science Engineering Social Studies Department Department Department Department Department of Computer of Physics of Chemistry of Electronic of Civil Science Engineering Engineering 动态集合中元素、元素之间的关系 这种集合上的基本操作及特殊操作如何定义这样一个“树”数据结构？ 动态集合中元素、元素之间的关系 这种集合上的基本操作及特殊操作