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-rw-r--r--binary_tree_preorder.cpp28
1 files changed, 0 insertions, 28 deletions
diff --git a/binary_tree_preorder.cpp b/binary_tree_preorder.cpp
deleted file mode 100644
index 7bba435..0000000
--- a/binary_tree_preorder.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-#include "leetcode.h"
-
-class Solution {
-public:
- vector<int> preorderTraversal(TreeNode *root) {
- // morris traversal
- vector<int> nodes;
- while (root) {
- if (root->left) {
- TreeNode *pre = root->left;
- while (pre->right && pre->right != root)
- pre = pre->right;
- if (!pre->right) {
- pre->right = root;
- nodes.push_back(root->val);
- root = root->left;
- } else {
- pre->right = NULL;
- root = root->right;
- }
- } else {
- nodes.push_back(root->val);
- root = root->right;
- }
- }
- return nodes;
- }
-};