、
C++
// O(n) space complexity
class Solution {
public:
void recoverTree(TreeNode *root) {
vector<TreeNode*> list;
vector<int> vals;
inorder(root, list, val
、
// O(n) space complexity
class Solution {
public:
void recoverTree(TreeNode *root) {
vector<TreeNode*> list;
vector<int> vals;
inorder(root, list, val