原题链接在这里:https://leetcode.com/problems/find-distance-in-a-binary-tree/ 题目: Given the root of a binary tree and two integerspandq, returnthe distance between the nodes of valuepand valueqin the tree. The distance between two nodes is the number of edges on the path from one to...
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 only nodes with keys less than or equal to the node's key. The right subtree of ...
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]. ...
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 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 ...
inorder(node->right, m, mx); } }; 下面这种解法是上面方法的迭代形式,也是用的中序遍历的方法,有兴趣的童鞋可以实现其他的遍历方法: 解法二: classSolution {public: vector<int> findMode(TreeNode*root) {if(!root)return{}; vector<int>res; ...
Given a binary tree, return all duplicate subtrees. For each kind of duplicate subtrees, you only need to return the root node of any one of them. Two trees are duplicate if they have the same structure with same node values. Example 1: ...
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438. Find All Anagrams in a String # 题目 # Given a string s and a non-empty string p, find all the start indices of p’s anagrams in s. Strings consists of lowercase English letters only and the length of both strings s and p will not be larger than 2
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