题目: Given a binary tree, flatten it to a linked list in-place. For example, Given The flattened tree should look like: 1 TreeNode ...
原题地址:http: oj.leetcode.com problems flatten binary tree to linked list 题意: Given a binary tree, flatten it to a linked list in place. For example,Given The flattened tree should look like: If you noti ...
2014-05-10 22:55 0 3394 推荐指数:
题目: Given a binary tree, flatten it to a linked list in-place. For example, Given The flattened tree should look like: 1 TreeNode ...
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 ...
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. ...
给定一刻二叉树,将二叉树按照前序遍历的顺序转为单链表,右指针指向next,左指针指向None 1、分治法:将左、右子树变为单链表,分别返回左右链表的最后一个节点,让左链表的最后一个节点指向右节点的第 ...
看起来很难,但是仔细想一下,实质就是二叉树的中序遍历的问题,中序遍历有递归和非递归(至少两种写法)。 递归: 非递归 Divide a ...
原题链接在这里:https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/description/ 题目: You are given a doubly linked list which in addition ...
原题地址:http://oj.leetcode.com/problems/convert-sorted-list-to-binary-search-tree/ 题意:将一条排序好的链表转换为二叉查找树,二叉查找树需要平衡。 解题思路:两个思路:一,可以使用快慢指针来找到中间的那个节点 ...
原题地址:http://oj.leetcode.com/problems/linked-list-cycle/ 题意:判断链表中是否存在环路。 解题思路:快慢指针技巧,slow指针和fast指针开始同时指向头结点head,fast每次走两步,slow每次走一步。如果链表不存在环,那么fast ...