100. Same Tree
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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.
/** * 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 && !q) || (!p && q)){ return false; } if(!p && !q){ return true; } if(p->val != q->val){ return false; } if(p->val == q->val){ return isSameTree(p->left, q->left) && isSameTree(p->right, q->right); } }};阅读全文
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