题目
C#代码
/**
* Definition for a binary tree node.
* public class TreeNode {
* public int val;
* public TreeNode left;
* public TreeNode right;
* public TreeNode(int x) { val = x; }
* }
*/
public class Solution {
public bool IsSameTree(TreeNode p, TreeNode q) {
if(p==null&&q==null)
return true;
if((p==null&&q!=null)||p!=null&&q==null)
return false;
if(p!=null&&q!=null&&p.val!=q.val)
return false;
return IsSameTree(p.left,q.left)&&IsSameTree(p.right,q.right);
}
}
