100. Same Tree

Total Accepted: 122794 Total Submissions: 284606 Difficulty: 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.

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Code:

bool isSameTree(struct TreeNode* p, struct TreeNode* q) {
     return (p == NULL && q == NULL) ||
            ((p != NULL && q != NULL && p->val == q->val) &&
            (isSameTree(p->left, q->left) && isSameTree(p->right, q->right)));
}