Leetcode-100. Same Tree
100. Same Tree
- Total Accepted: 159908
- Total Submissions: 358174
- Difficulty: Easy
- Contributors: Admin
Given two binary trees, write a function to check if they are equal or not.
Two binary trees are considered equal if they are structurally identical and the nodes have the same value.
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code:
/** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; */ class Solution { public: bool isSameTree(TreeNode* p, TreeNode* q) { if(p==NULL||q==NULL) return q==p; if((p->val==q->val)&&isSameTree(p->left,q->left)&&isSameTree(p->right,q->right)) return true; return false; } };