Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 这道题是要求把有序链表转为二叉搜索树,和之前那道Convert Sorted Array to Binary Search Tree 将有序数组转为二叉搜索树思路完全一样,只不过是操作的数据类型有所差别,一个是数组,一个是链表.数组方便就方便在可以通过index直接访问任意一个元…

108. Convert Sorted Array to Binary Search Tree 描述 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…

Convert Sorted List to Binary Search Tree Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 为了满足平衡要求,容易想到提出中间节点作为树根,因为已排序,所以左右两侧天然满足BST的要求. 左右子串分别递归下去,上层根节点连接下层根节点即可完成. 递归找中点,然后断开前后两段链表,并继续找…

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 diffe…

利用递归,构造二叉查找树, ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 给一个升序的单向链表,把他转换成一个二叉查找树 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Given a singly linked list where elements are…

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 给定一个升序的数组,把他转换成一个高度平衡的二叉查找树 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Given an array where elements are sorted in ascending or…

有序链表 0->1->2->3->4->5 转换为一个二叉排序树.我们在此创建一个平衡二叉排序树 1.先找链表到中间的节点 2.中间节点的val创建一个新的树节点TreeNode 3.将链表断裂为2部分 4.递归创建左子树和右子树 #include<iostream> #include<cstdlib> using namespace std; struct ListNode { int val; ListNode *next; ListNode(in…

---恢复内容开始--- Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 题目要求:转成高度平衡的二叉搜索树. 高度平衡的二叉搜索树:i)左子树和右子树的高度之差的绝对值不超过1; ii)树中的每个左子树和右子树都是AVL树; iii)每个节点都有一个平衡因子(balance factor bf),任一节点的平衡因子是1,0,…

题目描述 给定一个单链表,其中的元素按升序排序,将其转换为高度平衡的二叉搜索树. 本题中,一个高度平衡二叉树是指一个二叉树每个节点 的左右两个子树的高度差的绝对值不超过 1. 示例: 给定的有序链表: [-10, -3, 0, 5, 9], 一个可能的答案是:[0, -3, 9, -10, null, 5], 它可以表示下面这个高度平衡二叉搜索树: 0 / \ -3 9 / / -10 5 解题思路 转换二叉搜索树分为以下两步: 首先找到链表中间节点以及它的前一个节点,可以利用快慢指针的思想,接…

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 diffe…