如何遍历Btree? [英] How to traverse a Btree?

问题描述

我有一个Btree，我想弄清楚它的遍历方式，以便按键按升序显示.

I have a Btree and I'm trying to figure out how traverse it so that the keys are displayed ascending order.

我能弄清楚的是，这可以通过递归函数来完成.

All I can figure out is that this can be done with a recursive function.

要执行的伪代码是什么?

What's the pseudo-code to do it?

推荐答案

假设您的定义如下:

template <class T>
class btree_node
{
    btree_node **child;  // an array of child nodes
    T **element;  // the elements in this node

    unsigned int child_count; // the number of children
                              // the number of elements is 1 less then child_count
};

然后您需要执行以下操作:

Then you'll need do something like this:

void btree_inorder(node):
    for (int i = 0; i < node.child_count; ++i)
    {
        btree_inorder(node.child[i]);
        handle_element(node.element[i]);
    }
    btree_inorder(node.child[node.child_count-1]);

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