LeetCode100.相同的树
题目来源:
https://leetcode-cn.com/problems/same-tree/
题目描述:
代码如下:
/**
* Definition for a binary tree node.
* public class TreeNode {
* int val;
* TreeNode left;
* TreeNode right;
* TreeNode(int x) { val = x; }
* }
*/
class Solution {
public boolean isSameTree(TreeNode p, TreeNode q) {
if (p == null && q == null) {
return true;
}
if (p == null || q == null) {
return false;
}
return p.val == q.val && isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
}
}