For each kind of duplicate subtrees, you only need to return the root node of anyoneof them. Two trees areduplicateif they have thesame structurewith thesame node values. Example 1: Input:root = [1,2,3,4,null,2,4,null,null,4]Output:[[2,4],[4]] Example 2: Input:root = [2,...
*/classSolution{public:vector<TreeNode*>findDuplicateSubtrees(TreeNode* root){if(root ==NULL)returnvector<TreeNode*>(); Trace(root); Compare();returnres; }// 遍历所有子树voidTrace(TreeNode* root){if(root !=NULL) sub1.push_back(root);if(root->left !=NULL) Trace(root->left);if(ro...
*/classSolution{public:vector<TreeNode*>findDuplicateSubtrees(TreeNode* root){vector<TreeNode*> res;if(!root){returnres; }unordered_map<string,int> hashmap; dfs(root,hashmap,"",res);returnres; }stringdfs(TreeNode* root,unordered_map<string,int> &hashmap,stringtree,vector<TreeNode*> &re...
[leetcode] 652. Find Duplicate Subtrees Description 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...
LeetCode-652. Find Duplicate Subtrees Given a binary tree, return all duplicate subtrees. For each kind of duplicate subtrees, you only need to return the root node of anyoneof them. Two trees are duplicate if they have the same structure with same node values....
LeetCode——Find Duplicate Subtrees Question 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 sam......
[leetcode]652. Find Duplicate Subtrees [leetcode]652. Find Duplicate Subtrees Analysis 今天开心呀,明天放假也开心呀—— [每天刷题并不难0.0] Given a binary tree, return all duplicate subtrees. For each kind of duplicate subtrees, you only need to智能...
Given a binary tree, return all duplicate subtrees. For each kind of duplicate subtrees, you only need to return the root node of anyoneof them. Two trees are duplicate if they have the same structure with same node values. **Example 1: ** ...
[root->left],cmap[root->right]);if(mp.count(code)>0)_id=mp[code];else{_id=++id;mp[code]=_id;}if(cnt[_id]==1)ans.push_back(root);cnt[_id]++;cmap[root]=_id;}vector<TreeNode*>findDuplicateSubtrees(TreeNode*root){id=0;cmap[NULL]=-1;memset(cnt,0,sizeof(cnt));dfs(root...
https://github.com/grandyang/leetcode/issues/652 参考资料: https://leetcode.com/problems/find-duplicate-subtrees/ https://leetcode.com/problems/find-duplicate-subtrees/discuss/106011/java-concise-postorder-traversal-solution https://leetcode.com/problems/find-duplicate-subtrees/discuss/106055/C%2B...