问题
单项选择题
Which traversal method for a binary tree does the following Pascal code illustrate ( ) Procedure traverse(p:pointer) Begin If p＜＞nilthen begin traverse(p↑.left); process(p); traverse(p↑.right); endend;
A．preorder
B．postorder
C．reorder
D．inorder
答案
参考答案：D