Given a binary tree, return thepreordertraversal of its nodes values. Example: Follow up:Recursive solution is trivial, could you do it iteratively 一般我们提到树的遍历，最常见的有先序遍历，中序遍历，后序遍历和层序遍历，它们用递归实现起来都非常的简单 ...
2014-12-05 16:29 3 11564 推荐指数：
Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree ...
Return any binary tree that matches the given preorder and postorder traversals. Values in the traversals pre and post are distinct positive ...
Given a binary tree with N nodes, each node has a different value from {1, ..., N}. A node in this binary tree can be flipped by swapping the left ...
We run a preorder depth first search on the `root`of a binary tree. At each node in this traversal, we output D dashes (where D is the depth ...
One way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record the node's value. If it is a null ...
. 这道题要求从中序和后序遍历的结果来重建原二叉树，我们知道中序的遍历顺序是左-根-右，后序的顺序是左-右- ...
it iteratively? 二叉树的中序遍历顺序为左-根-右，可以有递归和非递归来解，其中非递归解法又 ...
Given a binary tree, return the inorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, return [1,3,2]. Note ...
