c++實現二叉樹的插入、刪除、查詢、遍歷和樹形打印

binary_tree.h 聲明html #ifndef BINARY_TREE #define BINARY_TREE #include "util.h" template<typename T> class tree_node { public: tree_node(T key_):key(key_), parent(NULL), left_child(NULL), right_chil

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