給定一刻二叉樹,將二叉樹按照前序遍歷的順序轉為單鏈表,右指針指向next,左指針指向None 1、分治法:將左、右子樹變為單鏈表,分別返回左右鏈表的最后一個節點,讓左鏈表的最后一個節點指向右節點的第一個節點,完成合並。右鏈表的最后一個節點即為整個鏈表的最后一個節點。 2、遍歷法:二叉樹的非遞歸 ...
Given a binary tree, flatten it to a linked list in place. For example,Given The flattened tree should look like: click to show hints. Hints: If you notice carefully in the flattened tree, each node ...
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給定一刻二叉樹,將二叉樹按照前序遍歷的順序轉為單鏈表,右指針指向next,左指針指向None 1、分治法:將左、右子樹變為單鏈表,分別返回左右鏈表的最后一個節點,讓左鏈表的最后一個節點指向右節點的第一個節點,完成合並。右鏈表的最后一個節點即為整個鏈表的最后一個節點。 2、遍歷法:二叉樹的非遞歸 ...
Given a binary tree, flatten it to a linked list in-place. For example,Given The flattened tree should look like: If you notice carefully ...
Medium! 題目描述: 給定一個二叉樹,原地將它展開為鏈表。 例如,給定二叉樹 將其展開為: 解題思路: 這道題要求把二叉樹展開成鏈表,根據展開后形成的鏈表的順序分析出是使用先序遍歷,那么只要是數的遍歷就有遞歸和非遞歸的兩種方法來求解,這里我們也用兩種方法來求解。 首先來 ...
原題地址:http://oj.leetcode.com/problems/flatten-binary-tree-to-linked-list/ 題意: Given a binary tree, flatten it to a linked list in-place. ...
題目: Given a binary tree, flatten it to a linked list in-place. For example, Given The flattened tree should look like: 1 TreeNode ...
在寫這篇文章之前說一下數據結構和算法這個系列,這個系列包含了很多東西,比如啥子排序,線性表,廣義表,樹,圖這些大家都是知道的,但是這些東西我們學了之后工作中能用到的又有多少呢,據我所知絕大部分公司,一 ...
Invert a binary tree. to Trivia: This problem was inspired by this original tweet by Max Howell: Google: 90% of our engineers use ...
Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves ...