Which traversal method for a binary tree does the following Pascal code illustrate? ( ) Procedure traverse(p:pointer) B

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问题 Which traversal method for a binary tree does the following Pascal code illustrate? (    )    Procedure traverse(p:pointer)    Begin      If p<>nil        then begin          traverse(p↑.left);           process(p);           traverse(p↑.right);         end       end;

选项 A、preorder
B、postorder
C、reorder
D、inorder

答案D

解析
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