Morris方法可参考帖子:Morris Traversal方法遍历二叉树(非递归,不用栈,O(1)空间) Java: Without Recursion, using Stack 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 publicclassSolution { /** * @param root: The root of binary tree. * @return: Inorder in ArrayList which...
Space complexity : O(n)O(n). Arraylist of size nn is used. 参考: https://leetcode.com/problems/binary-tree-inorder-traversal/solution/ http://bookshadow.com/weblog/2015/01/19/leetcode-binary-tree-inorder-traversal/
Given a binary search tree, print the elements in-order iteratively without using recursion.Note:Before you attempt this problem, you might want to try coding a pre-order traversal iterative solution first, because it is easier. On the other hand, coding a post-order iterative version is a ...
Inoder traversal means that traverse the left subtree of current node first, than display current node's value, afterwards traverse the right subtree of current node. 1. Recursive method is easy to get, if node == null, return. traverse the left child recursively using the in-order traverse...
* TreeNode(int x) { val = x; } * }*/classSolution { List<Integer> res =newArrayList<Integer>();publicList<Integer>inorderTraversal(TreeNode root) {//inorder traveral : left root rightinorder( root);returnres; }voidinorder(TreeNode node){if(node==null)return; ...
Typically, an implementation of in-order traversal of a binary tree hasO(h)space complexity, wherehis the height of the tree. Write a program to compute the in-order traversal of a binary tree usingO(1)space. In-order traversal without recursion with O(h) space, where h is the tree'...