Re:Space Requirements for Tree Traversal
by catnaroek on Sunday October 09, 2016 @01:18PM
(#12672141)
Are you assuming that nodes have parent pointers?
[ Parent
| on HN ]
Re:Space Requirements for Tree Traversal
by orange_county on Sunday October 09, 2016 @01:32PM
(#12672221)
You don't need parent pointers.
For converting binary tree into a linked list in O(n) time and O(1) space.
You have two pointers, the root and the tail (right child node).
If root has a left subtree, set tail->right = left subtree. Update tail again so it is the last right child node.
root = root->right
Repeat until root is NULL