Leetcode 100. Same Tree (Easy) (cpp)

/*

100. Same Tree (Easy)

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) {
if (p || q) return false;
return true;
}
return p -> val == q -> val && isSameTree(p -> left, q -> left) && isSameTree(p -> right, q -> right);
}
};