Determine_if_Two_Trees_are_Identical.cpp

class Solution
{
    public:
    //Function to check if two trees are identical.
    bool isIdentical(Node *r1, Node *r2)
    {
        if(!r1 && !r2){
            return true;
        }else if(!r1 || !r2){
            return false;
        }
        else if(r1->data != r2->data){
            return false;
        }
        return (isIdentical(r1->left, r2->left) && isIdentical(r1->right, r2->right));
    }
};