LeetCode100-相同的树-递归-树-数据结构

原题链接

class Solution {
public:
    bool isSameTree(TreeNode* p, TreeNode* q) {
        if(p == NULL || q == NULL)  return p == NULL && q == NULL;
        return p -> val == q -> val && isSameTree(p -> left, q -> left) && isSameTree(p -> right, q -> right);
    }
};