https://github.com/grandyang/leetcode/issues/366 类似题目: Maximum Depth of Binary Tree Minimum Height Trees 参考资料: https://leetcode.com/problems/find-leaves-of-binary-tree/ https://leetcode.com/problems/find-leaves-of-binary-tree/discuss/83773/1-ms-Easy-understand-Java-Solution https://...
LeetCode 366. Find Leaves of Binary Tree 实质就是求每个节点的最大深度。用一个hash表记录,最后输出。 classSolution {public: unordered_map<TreeNode *,int> hash;//record the level from bottomvector<vector<int>> findLeaves(TreeNode*root) { vector<vector<int>>res; dfs(root);//for (auto x:...
501. Find Mode in Binary Search Tree Given a binary search tree (BST) with duplicates, find all themode(s)(the most frequently occurred element) in the given BST. Assume a BST is defined as follows: The left subtree of a node contains only nodes with keysless than or equal tothe node...
Both the left and right subtrees must also be binary search trees. Example 1: Input:root = [1,null,2,2]Output:[2] Example 2: Input:root = [0]Output:[0] Constraints: The number of nodes in the tree is in the range[1, 104]. ...
leetcode 501. Find Mode in Binary Search Tree Given a binary search tree (BST) with duplicates, find all the mode(s) (the most frequently occurred element) in the given BST. Assume a BST is defined as follows: The left subtree of a node contains ......
Can you solve this real interview question? Find a Corresponding Node of a Binary Tree in a Clone of That Tree - Given two binary trees original and cloned and given a reference to a node target in the original tree. The cloned tree is a copy of the ori
[leetcode] 366. Find Leaves of Binary Tree @ python 一.题目: 给定一个二叉树,我们需要从叶子节点开始将所有的叶子节点记录并剔除,然后重复记录新的叶子节点并剔除,如此往复直至二叉树为空树. Example: Input: [1,2,3,4,5] 二.解题思路: 涉及到树,多半是要用到递归,这里我们需要设计一个递归函数,...
1261. Find Elements in a Contaminated Binary Tree** https://leetcode.com/problems/find-elements-in-a-contaminated-binary-tree/ 题目描述 Given a binary tree with the following rules: root.val == 0 IftreeNode.val == x andtreeNode.lef...
[LeetCode] 513. Find Bottom Left Tree Value Given a binary tree, find the leftmost value in the last row of the tree. Example 1: AI检测代码解析 Input: 2 / \ 1 3 Output: 1 1. 2. 3. 4. 5. 6. 7. 8. Example 2: AI检测代码解析...
Given two binary trees original and cloned and given a reference to a node target in the original tree. The cloned tree is a copy of the original tree. Return a reference to the same node in the cloned tree. Note that you are not allowed to change any of the two trees or the target...