Same Tree
/**
* struct TreeNode {
* int val;
* TreeNode *left;
* TreeNode *right;
* TreeNode() : val(0), left(nullptr), right(nullptr) {}
* TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
* TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}
* };
*/
class Solution {
public:
bool isSameTree(TreeNode* p, TreeNode* q) {
if(!p && !q) return true;
if((!p && q) || (p && !q)) return false;
if(p->val != q->val) {
return false;
}
if(isSameTree(p->left, q->left) == false) return false;
if(isSameTree(p->right, q->right) == false) return false;
return true;
}
};
