原文:[leetcode]Flatten Binary Tree to Linked List @ Python

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. For example,Given The flattened tree should look like: If you noti ...

2014-05-10 22:55 0 3394 推薦指數:

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二叉樹轉為單鏈表——Flatten Binary Tree to Linked List

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 ...

Tue Mar 12 01:28:00 CST 2019 0 572
[leetcode]Convert Sorted List to Binary Search Tree @ Python

原題地址:http://oj.leetcode.com/problems/convert-sorted-list-to-binary-search-tree/ 題意:將一條排序好的鏈表轉換為二叉查找樹,二叉查找樹需要平衡。 解題思路:兩個思路:一,可以使用快慢指針來找到中間的那個節點 ...

Mon May 12 03:18:00 CST 2014 1 3681
[leetcode]Linked List Cycle @ Python

原題地址:http://oj.leetcode.com/problems/linked-list-cycle/ 題意:判斷鏈表中是否存在環路。 解題思路:快慢指針技巧,slow指針和fast指針開始同時指向頭結點head,fast每次走兩步,slow每次走一步。如果鏈表不存在環,那么fast ...

Thu May 01 00:33:00 CST 2014 0 3812
 
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