Description: B) binary tree of some sort of basic operations (1) the use of binary list of the storage form of input from the keyboard to establish a binary sort tree (2) (1) create a binary tree in order traversal and print (3) the preparation method, a binary tree to determine whether the binary sort tree. (4) (1) to establish the binary sort tree, find a tree that does not exist and insert the keyword, and then print the tree
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2.cpp