LeetCode 面试题 17.12. BiNode【好】
原题链接
简单
作者:
大明湖的鱼
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2021-01-23 08:10:58
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所有人可见
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阅读 324
/**
* Definition for a binary tree node.
* struct TreeNode {
* int val;
* TreeNode *left;
* TreeNode *right;
* TreeNode(int x) : val(x), left(NULL), right(NULL) {}
* };
*/
class Solution {
public:
TreeNode* pre;
TreeNode* dumpy;
TreeNode* convertBiNode(TreeNode* root) {
pre = new TreeNode(-1);
dumpy = pre;
inorder(root);
return dumpy->right;
}
void inorder(TreeNode* root){
if(root == NULL) return ;
inorder(root->left);
pre->right = root;
root->left = nullptr;
pre = root;
inorder(root->right);
}
};