[LeetCode] 144. Binary Tree Preorder Traversal 二叉樹的先序遍歷
Given a binary tree, return the preorder traversal of its nodes' values. Example: Follow up: Recursive solution is trivial, could you do ...
原文：[LeetCode] 971. Flip Binary Tree To Match Preorder Traversal 翻轉二叉樹以匹配先序遍歷
Given a binary tree withNnodes, each node has a different value from , ..., N . A node in this binary tree can beflippedby swapping the left child and the right child of that node. Consider the seque ...
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[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal 由先序和中序遍歷建立二叉樹
Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree ...
[LeetCode] 889. Construct Binary Tree from Preorder and Postorder Traversal 由先序和后序遍歷建立二叉樹
Return any binary tree that matches the given preorder and postorder traversals. Values in the traversals pre and post are distinct positive ...
[LeetCode] 1028. Recover a Tree From Preorder Traversal 從先序遍歷還原二叉樹
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 ...
[LeetCode] Verify Preorder Serialization of a Binary Tree 驗證二叉樹的先序序列化
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 ...
[LeetCode] 102. Binary Tree Level Order Traversal 二叉樹層序遍歷
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example:Given binary ...
[LeetCode] Binary Tree Level Order Traversal II 二叉樹層序遍歷之二
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root ...
[LeetCode] Construct Binary Tree from Inorder and Postorder Traversal 由中序和后序遍歷建立二叉樹
. 這道題要求從中序和后序遍歷的結果來重建原二叉樹，我們知道中序的遍歷順序是左-根-右，后序的順序是左-右- ...