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...
到讨论区发现solution-2的解法:计数得到节点总数,知道节点数就可以确定一种满足要求的BST结构,然后使用中序遍历,将列表元素填入BST对应节点。 Description 109. Convert Sorted ListtoBinarySearch Tree Medium238290AddtoList Share Given the headofa singly linked listwhereelements are sortedinascendingorder, convert ...
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 subtrees of every node never differ by more than 1. Example...
node.left=sortedListToBST(head); node.right=sortedListToBST(cur.next); }returnnode; } } Here is the improvement: When we look through the current linked list from the head to the last node, in the end we can find the middle node the node ahead of middle node at the same time. Co...
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 给出一个所有元素以升序排序的单链表,将它转换成一棵高度平衡的二分查找树. 【题目链接】 www.lintcode.com/en/problem/convert-sorted-list-to-balanced-bst/ ...
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...
TreeNode*sortedListToBST(ListNode*head) {//base cases//1.NULL listif(!head)returnNULL;//2. single node listif(!head->next)returnnewTreeNode(head->val);//find the middle of the linked list//using floyd's hair & tortoise algorithmListNode*slow=head; ...
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. ...
LeetCode 109. Convert Sorted List to BST DescriptionGiven 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 ... 文章...
treeHead.right=self.sortedListToBST(middle.next)returntreeHead Code: #Definition for singly-linked list.#class ListNode:#def __init__(self, val=0, next=None):#self.val = val#self.next = next#Definition for a binary tree node.#class TreeNode:#def __init__(self, val=0, left=None,...