題目描述
題解
/**
* 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 true;
if(p != NULL && q != NULL && p->val== q->val)
return isSameTree(p->left, q->left) && isSameTree(p->right, q->right);
else
return false;
}
};
