(http://leetcode.com/2010/11/convert-binary-search-tree-bst-to.html) Convert a BST to a sorted circular doubly-linked list in-place. Think of the left and right pointers as synonymous to the previous and next pointers in a doubly-linked list. Code: voidtreeToDoublyList(Node *p, Node ...
Convert a BST to a sorted circular doubly-linked list in-place. Think of the left and right pointers as synonymous to the previous and next pointers in a doubly-linked list. Let's take the following BST as an example, it may help you understand the problem better: We want to transform ...
LeetCode 109. Convert Sorted List to Binary Search Tree Description Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtr...
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1. Example: Given th...
{19public:20TreeNode *sortedListToBST(ListNode *head) {21if(head == NULL)returnNULL;22if(head->next == NULL)returnnewTreeNode(head->val);23ListNode *step1 =head;24ListNode *step2 = head->next;25while(step2->next != NULL && step2->next->next !=NULL){26step1 = step1->next;27...
来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 2. 解题 采用二叉树的非递归遍历写法即可 代码语言:javascript ...
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. Example 2 1->2->3 => / \ 1 3 Note 用递归的方法来做,首先新建cur结点来复制head结点,然后计算链表head的长度,调用helper(start, end)函数建立平衡BST。
将BST转成有序的双向链表,left指向前一个元素,right指向后面。BST中序遍历得到的是从小到大有序列表。因此维持一个global pre,做中序遍历时把cur->left改成pre, 并更新Pre。最后再把首尾结点串起来。 classSolution{public:Node*pre;Node*treeToDoublyList(Node*root){if(root==nullptr)returnnullptr;Node*header...
Given an array where elements are sorted in ascending order, convert it to a height balanced BST.For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1.Example:Given...
Convert Sorted List to Binary Search Tree [LeetCode 77] 14Aug Frequency: ♥ ♥ ♥ Difficulty: ♥ ♥ ♥ ♥ Data Structure: BST, Tree, Linked List Algorithm: top down, bottom up, recursively Read the rest of this entry » ...