LeetCode: Same Tree

一次过

 1 /**
 2  * Definition for binary tree
 3  * struct TreeNode {
 4  *     int val;
 5  *     TreeNode *left;
 6  *     TreeNode *right;
 7  *     TreeNode(int x) : val(x), left(NULL), right(NULL) {}
 8  * };
 9  */
10 class Solution {
11 public:
12     bool isSameTree(TreeNode *p, TreeNode *q) {
13         // Start typing your C/C++ solution below
14         // DO NOT write int main() function
15         if (!p && !q) return true;
16         if ((!p && q) || (p && !q)) return false;
17         return p->val == q->val && isSameTree(p->left, q->left) && isSameTree(p->right, q->right);
18     }
19 };

 1 /**
 2  * Definition for a binary tree node.
 3  * public class TreeNode {
 4  *     public int val;
 5  *     public TreeNode left;
 6  *     public TreeNode right;
 7  *     public TreeNode(int x) { val = x; }
 8  * }
 9  */
10 public class Solution {
11     public bool IsSameTree(TreeNode p, TreeNode q) {
12         if (p == null && q == null) return true;
13         if (p == null || q == null) return false;
14         return p.val == q.val && IsSameTree(p.left, q.left) && IsSameTree(p.right, q.right);
15     }
16 }

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posted @ 2013-04-20 15:19 ying_vincent 阅读(129) 评论(0) 收藏举报

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