32. 給一二元樹(binary tree),已知這樹的preorder(前序)traversal為A, B, C, D, E。inorder(中序) traversal為B, A, D, C, E。請問它的postoder(後序)traversal為何?
(A)B, C, E, D, A
(B)B, E, D, C, A
(C)B, D, E, C, A
(D)B, C, D, E, A
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統計: A(8), B(14), C(56), D(7), E(0) #437100
統計: A(8), B(14), C(56), D(7), E(0) #437100