Root first binary sequence arranged in order of arrangement of projections

The whole idea: the use of the characteristics of the stack, the stack as the first-order process, in order as the stack process, calculate the likelihood of a stack

Preorder: DCAGFEB

Inorder traversal possibilities: CDFGEAB CGAFDEB DCGAFEB ACGDEFB

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Origin www.cnblogs.com/chaoaishow/p/11545200.html