/*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.*/
#include <iostream>
struct TreeNode
{
int val;
TreeNode* left;
TreeNode* right;
TreeNode(intx):val(x),left(NULL),right(NULL){}
};
class Solution
{
public:
bool isSameTree(TreeNode* p,TreeNode* q)
{
if(p==NULL && q==NULL)
return true;
else if(p==NULL || q==NULL)
return false;
else
{
if(p->val==q->val)
{
return isSameTree(p->left,q->left) && isSameTree(p->right,q->right);
}
return false;
}
}
};